Choosing Strategies for Explaining Addition and Subtraction

This video tutorial teaches how to explain addition and subtraction problems using various strategies. It emphasizes the importance of explaining math solutions to prove correctness, compare strategies, and help others understand. The tutorial covers strategies like using place value, fact families, and properties of addition. It also guides on choosing the right strategy based on the problem's numbers. Example problems illustrate how to apply these strategies effectively.

Why is it important to explain your solution in math?

• To show off your skills

• To confuse others

• To prove your correctness and learn from others

• To avoid doing the work

Which property allows you to add numbers in any order?

• Identity Property

• Commutative Property

• Associative Property

• Distributive Property

How can the associative property help in solving addition problems?

• By multiplying numbers

• By subtracting numbers

• By grouping numbers differently

• By changing the order of numbers

In the example with tables, which strategy did the monkey use to explain his solution?

• Using multiplication

• Using a number line

• Breaking numbers into smaller parts

• Using place value

What strategy did the monkey use to solve the popcorn box problem?

• Using multiplication

• Breaking numbers into tens and ones

• Using subtraction

• Using a number line