Day 17 of 30
Practice fact families with sums to 10
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Learning Objective
I can practice fact families with sums to 10.
Today we will learn how to practice fact families with sums to 10. Math helps us solve problems and understand the world around us.
A fact family is a set of related addition and subtraction sentences that use the same three numbers. For example, 3, 5, and 8 form a fact family: 3 + 5 = 8, 5 + 3 = 8, 8 − 3 = 5, 8 − 5 = 3. Fact families show that addition and subtraction are inverse operations—they "undo" each other. Knowing one fact gives you three others for free! Fact families also prepare you for "missing number" problems: if □ + 3 = 8, you use the family to find □ = 5. Use fact family triangles to organize and memorize related facts.
Let's break this down step by step so it's easy to understand. Follow along with the examples, and don't worry if it takes some practice to get the hang of it!
Remember: Making mistakes is part of learning. If something is tricky, try again, look at the examples, or ask for help.
A question we need to solve
The answer to a problem
Instructions
Materials Needed
- Counters or objects
- Pencil
- Practice sheet
Practice Problem 1: Apply what you learned today.
Practice Problem 2: Try a similar problem on your own.
Challenge: Can you create your own problem like the ones we practiced?
Teaching Tip
For younger learners: Use concrete objects and hands-on activities when teaching practice fact families with sums to 10. Keep sessions short (10-15 minutes) and incorporate movement or songs when possible.