▸ Watch on KERA TV (13.1) or via live stream

Now kids are getting another chance to learn math skills required by the state for grades K-8, plus Algebra 1. **KERA TV is partnering with the Dallas Independent School District to broadcast math lessons created and presented by Dallas ISD teachers.**

Here’s everything you need to know:

▸ Lessons will air from Monday, July 6, through Friday, August 7.

▸ They will be broadcast in 30-minute blocks on weekdays between noon and 2:30 p.m.

▸ The lessons for each grade level will be about 14 minutes long.

▸ The video classes will provide targeted, engaging instruction, with short breaks between the lessons.

▸ They will follow curriculum guidelines as set forth by Houghton Mifflin Harcourt for grades K-8th and McGraw Hill Education for Algebra I.

▸ Watch the lessons on KERA TV (Channel 13.1) or stream them at kera.org/live.

**Why math?** Dallas ISD decided to focus on math because researchers have projected that students could lose as much as a grade level in this crucial subject if the impact of COVID-19 closures is added to normal summer learning losses.

**Need help? ** The math lessons are produced by Dallas ISD. If you have a question about a particular lesson, please contact STEM Math Director Stej Sanchez at stsanchez@dallasisd.org.

▸ **Note:** *Younger children can still enjoy their favorite PBS KIDS programs on KERA Kids 24/7, available on digital channel 13.2 and streaming at kerakids.org.*

* NEW resources added 7/31!* ▸ KERA has rounded up resources that cover the same topics as the TV classes, so students can review the skills they just learned and practice using them in fun games and activities. These materials will be updated through the summer.

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### Kindergarten

**NEW**✔️ Graphing – This video from*Curious George*introduces children to sorting. The “Support Materials” include a lesson, handouts and background reading to help kids practice sorting and see charts and tables make it easy to count the sorted items.**NEW**✔️ Hat Grab – This game from*Curious George*asks children to identify all the hats of certain colors and then use a table to count which color was most popular. In English and Spanish.**NEW**✔️ Ribbit! – This interactive game from*Curious George*with a pond full of frogs helps children practice adding and subtracting by one from a base of 10. Make it a little harder by asking your child to predict how many frogs will be in the pond before he/she clicks the + or – sign.✔️ Train Station – This interactive game from Curious George lets children practice adding different combinations of numbers to reach the same sum, up to a total of 10. Available in English and Spanish. The “Support Materials” include a teaching guide with tips for discussing how your child comes up with answers.

✔️ Indian Counting #19 – This video from Sesame Street counts to 19 with each number illustrated by beautiful images inspired by art from India.

✔️ The Perfect Ten Problem – This game from

*Peg + Cat*shows different number combinations to reach 10, including how to use 0. The game is set up as a book, with the numbers at the bottom of each page slipping in a lesson showing how numbers grow when you add 1.✔️ 14 Trains – This video from

*Sesame Street*helps children count to 14 and recognize the written number. Stop the video at any point to let children count how many trains have arrived on their own.✔️ Making Ten – This video shows how different groups of numbers can all add up to 10. Check the “Support Materials” for activities and background information on why learning to add to 10 is important for understanding later math.

✔️ Meatball Launcher – This game from the PBS Kids show

*Curious George*rewards children for adding the right number of meatballs ordered by different customers to a big plate of spaghetti. It’s a great way to practice counting up to 5.✔️ Rock Art – This counting game from the PBS Kids show

*Peg + Cat*lets children move rocks onto a screen to as the game announces the total with each 5 added to the screen. It’s a great game for asking kids to count the rocks for themselves or asking how many more rocks they need to reach a certain total. Lots of possibilities!✔️ The Count Sings of 8 – The Count from Sesame Street reminds us of the many ways 8 is great!

✔️ Sorting it Out: At Home – This video from PBS Kids that shows parents teaching math concepts to their kids with objects they find around their home.

✔️ Numbers & Counting — This package from PBS Kids Lab includes a video of a classroom lesson on counting, a video of a counting lesson at home and two at-home activities. The activities are in English and Spanish.

✔️ 5 Dogs 5 Bones – This colorful video from

*Sesame Street*shows the importance of counting to five when you have five dogs and each needs a bone! - +
### First Grade

**NEW**✔️ Quest for the Golden Pyramids – This video from the clever math show*Peg + Cat*teaches children about 3-dimensional shapes. After watching, let your child play the game “Magical Shape Hunt” to practice identifying shapes.**NEW**✔️ Super Peg + Cat Guy –This interactive game from the PBS show*Peg + Cat*helps children identify two-dimensional shapes and understand how to add pieces together to make whole shapes.✔️ 40 by 10’s Song – This fun song from Sesame Street shows how to count by 10s. Once kids get this lesson you can challenge them to count by 10s to reach any big number!

✔️ Operation: Adding Up and Taking Away – This booklet for Grades 1-2 is packed with activities and links to videos that will help your child practice addition and subtraction and start figuring out word problems. There’s enough here to keep practicing for days! Support Materials include a handout for parents in English and Spanish.

✔️ Take One Away – This video from the PBS Kids show Peg + Cat shows how to subtract 1 by counting backwards. After watching this video, kids can practice taking 1 away with coins or other objects.

✔️ Using a Number Bond to Show Subtraction – This video shows how to teach your child to use number bonds to understand subtraction and create word sentences for subtraction problems.

✔️ Abby and Cookie Monster Subtract Cookies – This

*Sesame Street*video shows that subtraction is easy to learn when you are taking cookies away. Abby uses a wand. Cookie Monster uses….well, you can guess!✔️ Double Trouble – This video from

*Odd Squad*shows how to double a number by adding it to itself. It’s a first step toward learning multiplication.✔️ Do You See My Seahorse? – This game from

*The Cat in the Hat*asks children to count the number of baby seahorses each dad seahorse is looking for. You can choose easy, medium and hard levels as your child’s counting improves.✔️ Counting Chickens – this video from the PBS Kids show

*Peg + Cat*helps children count to 20, recognize the written numbers and notice place values after 10.✔️ Understanding Place Value – This video shows parents how to help children understand place values for tens and ones as they count above 10.

✔️ Math is Everywhere — This fun video song from PBS Kids will get you rocking with summer math.

✔️ Counting by Tens Song: 100 Chickens on the Purple Planet – This video song from the

*Peg+Cat*show on PBS Kids shows how to count by 10s up to 100. The video has support materials, including a fun activity and a printable Hundreds Chart for counting to 100.✔️ Games with the Hundreds Chart – These games in English and Spanish provide different ways for children to practice counting to 100.

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### Second Grade

**NEW**✔️ Catching a Kidnapper – This lesson from*Cyberchase*is a fun way to learn about measurement of our bodies and how different body parts relate to each other in length. It includes two videos, a handout and a couple of quizzes (with an answer key).**NEW**✔️ Mega Mall – This interactive game from*Peg + Cat*combines shape and color recognition with money and counting skills.**NEW**✔️ All Things 100 – This downloadable packet has several activities to help children understand the quantity 100 and different ways to add numbers to reach 100. It was designed as a way to mark the 100^{th}day of school each year, but the activities are fun anytime! In English and Spanish.✔️ Shape Game – This game from Odd Squad helps children identify two-dimensional shapes, such as rectangles, squares and triangles, and then combine shapes to fit a pattern. The cases become more complex the longer they play. Instructions are in English and Spanish.

✔️ Operation: Adding Up and Taking Away – This booklet for Grades 1-2 is packed with activities and links to videos that will help your child practice addition and subtraction and start figuring out word problems. There’s enough here to keep practicing for days! Support Materials include a handout for parents in English and Spanish.

✔️ Find Your Badge Number – All agents in the PBS Kids show Odd Squad have a badge number. Children can figure out their badge number by using this special decoder that shows how to add together numbers associated with each letter in a child’s name. Kids can also figure out badge numbers for friends, family members or just made-up names.

✔️ Regrouping to Subtract – This video shows how to subtract numbers that are two or three digits by regrouping them into ones, tens and hundreds. The video uses “place value discs,” which you can create at home using coins or any other common objects.

✔️ Tape Diagrams: Modeling 2-Digit Addition & Subtraction – This video shows you how to use a visual tool to figure out word problems and solve for an unknown in any position. The technique works for addition and subtraction with numbers of any size.

✔️ Number Forms — This video demonstrates how to express base-ten numerals written in standard form, unit form, expanded form, and number name.

✔️ Chicken Coop – This interactive game from the PBS Kids show

*Peg + Cat*guides kids as they count to 100 – with fun little rewards along the way. Instructions are in English and Spanish.✔️ Addition Blocks Game – This fast-paced game challenges children to add two numbers in a short time to reach a specific sum. It’s a great way to practice addition tables. Click “About” for instructions. There’s also an option for “Multiplication Blocks” when kids get to that mat lesson!

✔️ Compare Three Digit Numbers Using >, <, and

**=**Signs – These activities help children compare the sizes of big numbers. The downloadable booklet is designed for use with a whole class but the activities work just as well for one or two children.✔️ Missing Oscarbots – This video from the PBS Kids show

*Odd Squad*shows how helpful a number line can be when a few agents go missing.✔️ Place Value Chart: Modeling 2-Digit & 3-Digit Addition and Subtraction – This video shows how to create a chart for place values of ones, tens and 100s to understand how to add 3-digit numbers.

✔️ The Place Value House – This downloadable set of games from

*Odd Squad*provides a visual way for children to understand place values and practice breaking down very big numbers! - +
### Third Grade

**NEW**✔️ Time Slot — Hot dogs and sports go hand in hand, but all the fans won’t get fed if the concession stand doesn’t fill all its work shifts. Can you create a schedule for so that there is always someone there to take orders? The activity includes a make-believe schedule and a skit for you and your child to read aloud to get clues for why filling schedules requires good math skills. From the*Math Can Take You Places*curriculum from KERA.**NEW**✔️ Multiplication as Replication – This lesson from*Cyberchase*teaches secrets of multiplication, like how it is the same as adding the same number several times. It shows how to build tables and use patterns to organize repeated numbers and how to multiply by 10 or 100 for bigger numbers. The package includes videos, handouts, activities and quizzes (with an answer key).✔️ Calculating Elapsed Time – This lesson from Cyberchase includes videos, handouts, activities and quizzes (with an answer key) to teach children about time intervals and share tips for adding and subtracting time when minutes cross the hour boundary.

✔️ 5 Bugs = 30 Glows of Power – This video from Cyberchase shows how to use variables, division and multiplication to calculate the total amount of power produced by glowing bugs that can be used to start a machine.

✔️ Properties and Patterns in Arithmetic: Multiplication – This video from Khan Academy explains very clearly how the distributive property works with multiplication and why it is a very handy tool when multiplying big numbers.

✔️ Applying Multiplication and Division: Blueberries for Friends – This video from Khan Academy does a great job of showing how division is related to addition and multiplication. The video demonstrates this with blueberries. You can make the same point using coins, buttons or other objects that can be divided into groups.

✔️ Earning 100 Snelfus – This video from

*Cyberchase*shows how to count by 2s to reach 10 and by 10s to reach 100. Check the “Support Materials” for Teaching Tips with questions to help your child think about ways to divide a big number into smaller parts and how to keep track of the parts as they add up.✔️ Halfway From 30 – This video from

*Odd Squad*reminds kids how to use a number line to figure out the halfway point from 30.✔️ Game Time

**!**– In this video from*Odd Squad*, the solve what is causing bad luck by figuring out how to add several numbers to get a total of 13.✔️ Rounding: to the Nearest 10 – This video from Khan Academy explains how to round numbers to the nearest 10 value using a number line.

✔️ Rounding: Nearest 10 or 100 – This video shows how to use a vertical number line to figure out where a number lies between 700 and 800.

✔️ 60 is the Magic Number – This video and printable activity from the PBS Kids show

*Cyberchase*shows how to create a chart to keep track of minutes of exercise each day. The goal is to reach 60 minutes total for each day.✔️ Rounding Game – This online game from Cyberchase lets students use estimation to add three numbers without a calculator. The game lets you move to harder levels. It also has a guide in English and Spanish to help you think about how this game improves your child’s math skills.

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### Fourth Grade

**NEW**✔️ Away We Go — This activity asks students to estimate the cost of a family trip to Six Flags Over Texas, including a round-trip flight for grandparents visiting from Oregon. The lesson includes four activities to calculate the least amount and the most the family might spend for tickets, food and souvenirs and plane tickets from Oregon. You might start by watching the video, “Amazing Amusement,” which was created to go with the lesson. Stop at minute 6 after the teacher explains the problems but before students start showing their work. This fun lesson is from KERA’s*Math Can Take You Places*curriculum. In English and Spanish.**NEW**✔️ Check It Out – This printable card game from KERA’s*Math Can Take You Places*curriculum gives kids real-world practice on using a checkbook register to track pretend expenses. It’s great practice for adding and subtracting money.✔️ Measure Up – This printable activity lets students practice measuring the area and perimeter of real-life objects at home, using grid paper provided in the activity. From KERA’s Math Can Take You Places curriculum. You might watch the video “The Long and Tall of It” for ideas about using the grid paper to figure out the size of a bed where a Dallas Mavericks player can get a good night’s rest on the road.

✔️ Addition of Fractions Using a Visual Model – This video shows how to use a visual model to add fractions with unlike denominators. Check the “Support Materials” to find a printable copy of the great “Fraction Diagram” demonstrated in the video for practicing adding fractions at home.

✔️ Adding and Subtracting Fractions: Word Problem – How Long is this Lizard? – This video shows how to add fractions to calculate how long a lizard is – and then convert the total length into a mixed number. Your child can practice these skills by adding lengths of common objects around the house, using a ruler that has inches marked off in fractions — 1/8 inch, 1/4 inch, 1/2 inch, etc.

✔️ Choosing the Most Orange Crystal – This video from

*Cyberchase*shows how to figure out equivalent fractions and the compare different fractions to see which is the biggest. Check the “Support Materials” for Teaching Tips with great questions to be sure children understand how to compare fractions. The Activity links to a lesson plan that parents can easily do at home to help children practice this important lesson.✔️ Introduction to Equivalent Fractions – Have you ever had to share a pizza and gotten stuck with a smaller piece? This video from Khan Academy shows how to know when fractions are equivalent in size.

✔️ Rounding to whole numbers – This fun, interactive lesson from PBS Learning Media, uses a skit about a Number Line Party to teach kids how to round decimals to the nearest whole number. Hint: Only whole numbers can get into the party.

✔️ Decimals and Fractions on a Number Line – This video from Khan Academy shows how to plot decimals and fractions on a number line.

✔️ Comparing Decimals: Digits to the Right of the Decimal – This video has some useful tips for comparing decimals of different sizes. It also has a handy transcript you can download to review the information again later.

✔️ Several Short Rails Make More Than A Whole – This video from the PBS Kids show Cyberchase helps students understand decimals and how to add them together.

✔️ Explore the Relationship Among Fractions, Decimal Notation, and Percents – This package of three videos helps students see how fractions, decimals and percents all provide the same information. They are just written in different ways.

✔️ Rewriting a Fraction as a Decimal – This video from Khan Academy explains how to convert fractions into decimals – and includes a printable transcript to help you remember what you have learned.

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### Fifth Grade

**NEW**✔️ Dream Design – This activity challenges kids to imagine their dream bedroom and then draw it to scale. Game console? 100-inch plasma TV? Computer desk? No problem, as long as it all fits inside a 12-foot-by-15-foot room. The activity comes with printable pages showing the dimensions of common furniture and grid paper for making the scale drawing. From KERA’s*Math Can Take You Places*curriculum.**NEW**✔️ Why Are Cicadas So Good at Math? — Can insects do math? This video from*It’s Okay to Be Smart*explains how and why periodical cicadas operate in cycles that are prime numbers. (The video was made in 2015 so some references are dated, but truths about cicada behavior haven’t changed.)✔️ Finding Factors of 20 – This video from Cyberchase uses seashells to figure out the factors of 20. The “Support Materials” include background reading on factors and discussion questions that ask kids to explain their understanding of factors.

✔️ Using Recipes to Add Fractions and Convert Improper Fractions – This lesson on doubling a recipe includes several printable handouts that explain how to add fractions and spaces for students to work out their answers. You can use it with this video from Cyberchase: Cupcake Mix Meets Fractions.

✔️ Subtracting Fractions with Unlike Denominators: Word Problem – This video from Khan Academy shows how to solve a word problem for subtraction by converting the mixed numbers into improper fractions. The technique also works for adding mixed fractions.

✔️ Who Won? Comparing Decimals to the Thousandths Place – Doing this activity as a fun way to review some key facts about decimals as you head into a week with several lessons involving decimals.

✔️ Moving the Decimal: Multiplying a Decimal by a Power of 10 – This video from Khan Academy shows how to multiply 0.44 times 1000 using powers of 10. It also shows how solving that problem will help you when multiplying amounts of money.

✔️ Rounding to the Tenths Place – This video skit takes you to a Number Line Party only allows numbers rounded to tenth place – a tricky calculation. This interactive lesson will teach you how to figure it out!

✔️ Comparing Decimals: Ordering from Least to Greatest – This video from Khan Academy shows five decimal numbers and asks how to order them from smallest to largest. Be careful with zeroes to the right of the decimal point!

✔️ Conceptualizing Decimals and Place Notation: Decimals, Comparing Place Values – This Khan Academy video starts with a huge number — 7,346,521.032 – and shows how the digit 3 has very different values when it appears at different places in the big number.

✔️ Decimals in Expanded Form – In this fun video, a group of kids stand in a line. Each represents a different digit – and the decimal point – in the number 342.98, and each explains his or her value in the whole number. There’s also a printable activity to practice what you learned from the video.

✔️ How Many Rails for the Detour? – In this video from Cyberchase, the friends have to figure out how many segments of rail they need to build a detour. It’s a lesson about the importance of keeping place values straight when adding decimals.

✔️ Lesson with “How Many Rails for the Detour” – This lesson includes several printable activities for adding decimals that show how important it is to line up decimal points. There’s also a key for checking which answers are right.

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### Sixth Grade

**NEW**✔️ Area of a Triangle – In this video, Geometry Gal explains how to calculate the area of a triangle. The “Support Materials” include a printable page with geometry vocabulary and a fun activity to find triangles hidden within other shapes, such as squares, rectangles and the rhombus.**NEW**✔️ Cryptology Using Algebraic Expressions – This interactive game lets students solve algebraic expressions to help crack the code to nab an international smuggling ring. The “Support Materials” include a lesson plan that explains terms used in algebraic expressions and provides printable materials where kids show their calculations for cracking codes in the game.✔️ Order of Operations: PEMDAS Lesson – This fun video will help kids remember the order of operations by rapping along with a song from Flocabulary. The “Support Materials” include an activity for students to practice order of

✔️ Solving Unit Rate Problems – This video shows how to solve unit rate problems – in this case, which contestant will win a pie-eating contest. Check the “Support Materials” for an activity that will let you practice by using store ads to calculate the unit cost of items to find the best deals for your money.

✔️ Introduction to Percentages: Percentage of a Whole Number – This video from Khan Academy shows several different ways to solve problems involving percentages, decimals, and fractions. The clear explanations will equip students to practice solving more problems by converting fractions and decimals.

✔️ Competing for the Northern Hemisphere Games – In this video from

*Cyberchase*the character needs 50 points to qualify for a competition. Follow his math as he figures out how many points he needs to earn after a bad performance earns a negative score. The “Support Materials” includes an Activity with a link to a lesson “Summing Integers: Positive and Negative” for practicing these addition skills.✔️ Addition of Positive and Negative Integers – This video shows a card game that teaches you how to add positive and negative numbers. Check the “Support Materials” for word problems to practice this skill and an activity for playing the card game on your own.

✔️ Keep, Change, Flip – A hip-hop song on dividing fractions? Sure – and you won’t forget the steps after listening a few times. “Support Materials” include a worksheet with practice problems and a downloadable page with several activities.

✔️ Multiplying Fractions by Whole Numbers – An interactive set of games and lessons that allow students to focus on literacy skills while focusing on multiplying fractions by whole numbers.

✔️ Division of Fractions: Using Fraction Strips – Dividing fractions sounds much harder than it really is. This video will help you think about how to wrestle this challenge down to size!

✔️ Addition of Positive and Negative Integers – This video from PBS LearningMedia introduces a card game that helps to develop student’s skills of adding positive and negative numbers, and subtracting integers.

✔️ I <3 Math: Integers — This video from PBS LearningMedia looks at the ways in which integers are used in the real world.

✔️ The Number Line: Rational Numbers and Football — This interactive resource from PBS LearningMedia allows students to use a football field to practice working on positive and negative integers. *Adobe flash is required to utilize this resource.

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### Seventh Grade

**NEW**✔️ Random Sampling: How Many Fish? – This video demonstrates how to estimate the total number of fish in a batch by using random samples. The “Support Materials” include a handout and activity for finding averages and using a ratio table to estimate the total population. Answer keys are included.**NEW**✔️ Educators & Families: How Your Money Grows – This table shows how fast money grows when invested with compound interest. The table shows three scenarios to show how total money accrual differs depending on when it is invested and for how long. It was created to go with the PBS program*Your Life, Your Money.***NEW**✔️ Formulas for Circle Area and Circumference: Simple as Pie – This video from*Cyberchase*shows why the difference between circumference and diameter is important when Bianca and a friend decide to start their own pie business.✔️ Representing Volume of Right Rectangular Prisms – This video explains how a rectangular prism can be built from cubes and how the sum of those cubes is equal to its volume. It provides a great visual way to understand volume.

✔️ XY Flyer – This fun interactive game lets students explore the behavior of lines by composing equations to launch a toy airplane through a series of hoops. Try the activity under “Support Materials” for a deeper challenge.

✔️ Probability Space – This video provides a visual representation of sample space for random events and explains how to calculate probability. The “Support Materials” include an activity that builds off the video to provide practice calculating probability. You might also try some of the resources in the column to the right of the video for more explanations of probability and opportunities to practice calculations.

✔️ Similar Ratios – This interactive lesson shows that if you know a few side lengths of a shape, you can use that to determine side lengths for similar shapes. You will find more resources that teach related principles in the right margin.

✔️ The Math of Credit Cards – This video explains how credit cards work and shows the impact and high cost of outstanding balances when borrowing money using credit cards. There’s also an activity in which students discuss the key concepts presented in the video, including the relationship between lines of credit, debt, spending, and interest charges. They then learn to calculate simple interest.

✔️ Expressions with rational numbers – This video from Khan Academy uses several problems to explain how to compare expressions with positive and negative fractions. There’s a transcript to refer back to when you want a refresher.

✔️ The Real World Ratio and Rate Reasoning: How to power the skate park: This interactive lesson allows students to view and analyze a series of video clips and complete an activity focusing on areas and ratios.

✔️ Logical Leaps: Adding Rational Numbers on the Number Line Through this interactive lesson, students will practice their skills with equivalent fractions and common denominators.

✔️ Converting Rational Numbers — This video from PBS LearningMedia explains how to convert fractions to decimals.

✔️ Solving Linear Equations with Negative Numbers — This video from PBS LearningMedia explains what variables and inverse operations are, in addition to how to solve a linear equation.

✔️ Absolute Value — This animated video explains absolute value through a number line demonstration and by giving a real-life example.

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### Eighth Grade

**NEW**✔️ Human Tree: Dilations – This video from the National Museum of Mathematics uses an image of a visitor to create a “Human Tree” using dilations and explains how exponents can be used in an equation to express the proportional relationship in fractals. The “Support Materials” include a handout and activity for students to practice what they have learned.**NEW**✔️ Rotation – This video explains rotation, a concept in geometry in which a shape turns around a point – like the triangular shapes between spokes in a wheel turn around the axle. The “Support Materials” include a handout and activity page that students can use to practice rotation of different shapes.**NEW**✔️ Sphere Volume – This interactive lesson teaches how to calculate the volume of a sphere with helpful reviews of the Pythagorean Theorem and calculations of volumes for spheres and cylinders. Students can opt for review lessons at several points during the demonstration.✔️ Cylinder Surface Area – This interactive lesson shows how to calculate the surface area of a cylinder. At key points it asks students to figure out various pieces of the final calculation. Students can request help along the way.

✔️ Two-Way Tables and Associations – This interactive lesson is a great way for students to practice using bivariate data. Using data in a table, students answer questions that explore possible associations between students’ grade level and their preferences for using land behind a middle school. They also calculate frequencies of each preference to help the principal choose the most popular option.

✔️ Pythagorean Theorem – This interactive lesson challenges students to use the Pythagorean Theorem to solve several problems asking for the length of a hypotenuse or a one of the sides. If you feel shaky about a calculation, click the “Stuck? Get a hint” button at the bottom left of the screen.

✔️ Slope and House Construction – In this video, a master carpenter explains shows how slope – rise over run — comes into play when building homes for such important details as making sure the plumbing drains and the roof has enough pitch for rain to run off.

✔️ Slope and Rate of Change: Examples – This video from Khan Academy gives several examples to show how to calculate slope using two points of a line.

✔️ Intro to rational & irrational numbers – This video from Khan Academy gives a clear explanation of the difference between rational and irrational numbers. There’s also a transcript to refer back to later.

✔️ Properties of Real Numbers — This video students will learn about the properties of real numbers, variables, and algebraic expressions.

✔️ Building a Number Line — This interactive lesson allows students to focus on displaying counting numbers, integers, and rational numbers, and real numbers on a number line.

✔️ Proportional Relationship — This video on PBS LearningMedia explains how ratios, tables, and graphs can help to identify proportional relationships. The video is supported by an activity in the support materials.

✔️ Scientific Notation — This animated video from PBS LearningMedia explains the scientific notation and provides examples in converting the numbers to and from scientific notations.

✔️ Comparing Powers of 10 — This interactive resource from PBS LearningMedia allows students to determine which series of numbers written in scientific notation are larger and by what magnitude.

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### Algebra I

**NEW**✔️ Solving Inequalities – This interactive lesson shows how to solve inequalities one step at a time – just like you do with equations.**NEW**✔️ Fitting Lines to Data – This video shows how plotting measurements in a scatterplot lets Colorado scientists draw a regression line to predict water supply based on snowfall in the Rockies. Another example shows predictions using data from forensic science. There’s a downloadable transcript to help you remember what you have learned.✔️ Manipulating Graphs – This video shows how a graph is altered when you change key elements of the equation presented in slope intercept form. The “Support Materials” include a worksheet for students to practice writing equations for different lines on a graph.

✔️ Analyzing Linear Functions: Comparing Linear Functions – Slope – This video from Khan Academy uses a table of values to determine which graphs show functions that are increasing faster than f, that is, that have a steeper slope.

✔️ The Function Machine – The Ninja Escape game asks students to solve linear equations for y and then identify the correct graph to win points. IMPORTANT TIP: To understand how to play the game and get some practice with equations before starting, read the “For Teachers” document under “Support Materials.”

✔️ Multi-Step Equations – This interactive lesson lets students practice writing and solving multi-step equations. The lesson explains correct answers along the way.

✔️ Galileo’s Falling Bodies – Yes, math IS very useful in real life! This video from the PBS show

*NOVA*shows had Galileo used math to figure out how fast objects fall. Follow the video’s explanation of the relationship between distance and time for falling objects and see if you can figure out how far the ball would travel in the next time interval…..and the one after that.✔️ Equivalent Expressions with the Distributive Property – This video and activities (found under “Support Materials” will refresh your memory on how to use distributive property for sharing cookies with friends or writing algebraic equations.

✔️ What is a Function? – This Khan Academy video reminds you how to read f(x) and other notations used in functions to solve problems.

✔️ Pairs of Linear Equations – This interactive exercise lets students visualize how to set up a problem and write the equation.

✔️ Simplifying Complicated Equations — Solving with the Distributive Property – This video from Khan Academy shows how to use distributive property in big equations. You can download a transcript to help remember the main points.

✔️ Analyzing Relations and Functions – This video’s clear explanation of these key Algebra 1 processes will remind you why algebra is so important for solving everyday questions. It’s 30 minutes long so you might want to download the transcript to remember all parts.

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