Video: Number Lines | Finding Sums and Differences on a Number Line Grade Levels: 2nd Grade, 3rd Grade Rob is back riding his bike as he learns about adding and subtracting on the number line to measure his distance. His friends Lindsey and Suzy then come along to help show Rob how to find sums and differences, and finally describe that the equals spaces on a number line can be called intervals. The group of friends ends their lesson by sitting underneath the lights of the Milky Way and see a magical message appear before their very eyes... watch to find out what it says! Our Number Lines Song for Kids video is aligned with the following Common Core standards: CCSS 2.MD.6 Represent whole numbers as lengths from 0 on a number line diagram with equally spaced points corresponding to the numbers 0, 1, 2, ..., and represent whole-number sums and differences within 100 on a number line diagram.
Tips for Parents
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Here's how to talk to your child about it
After watching the video, you learned that numbers can be represented on a number line and used to add and subtract. You also learned that the spaces between the numbers are called intervals.
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Some activities you can do with your child now
- Have your child practice counting from 1 to 9 on a number line diagram, marking each number with equally spaced points. - Extend the number line to 10, 20, 30, and so on, and have your child identify each number. - Create addition problems using the number line, such as "jumping" from one number to another to find the sum. - Practice subtraction by "jumping back" on the number line to find the difference between two numbers.
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Pretend play with your child
GAME: Number Line Jump Instructions: Parent (you) and child (profile_name) take turns being "Rob" and "Mom". Use a number line (drawn or imaginary) and markers to represent the numbers. Start at 0 and take turns adding or subtracting numbers based on the video. Jump forward or backward to find the sum or difference. The goal is to reach a specific number or solve a math problem. Have fun jumping on the number line! Note: Use the term "interval" to describe the spaces between each mark on the number line.
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1 take away from the video for your child
"Moral Lesson: Learning how to add and subtract on a number line teaches us how to track distances and find sums and differences. It also shows us the importance of persistence and the value of intervals."
