Objective
By the end of this lesson, you will be able to confidently use mental and written strategies for adding and subtracting 2- and 3-digit numbers.
Materials and Prep
- Pencil and paper
- 2- and 3-digit number cards (can be made using index cards)
- Enthusiasm and willingness to learn!
No prior knowledge is required, just come ready to have fun with numbers!
Activities
- Number Tower: Build a tower using the number cards. Add the numbers on each card as you stack them up. How tall can you make your tower?
- Math Race: Set up a race with a friend or family member to solve addition and subtraction problems involving 2- and 3-digit numbers. Who can reach the finish line first?
- Story Problems: Create fun story problems involving your favorite characters or animals. Solve them using mental strategies and write down your answers.
- Math Magic: Perform magic tricks where you can make numbers disappear or reappear by adding or subtracting them. Impress your audience with your math skills!
Talking Points
- "Let's imagine numbers as friends that we can play with and combine to make new numbers!"
- "When we add two numbers together, we are putting them together to find the total. It's like putting puzzle pieces together."
- "Subtracting means taking away. We can think of it as sharing our toys with friends. How many toys do we have left?"
- "Sometimes it's easier to solve problems in our heads by breaking the numbers into smaller parts. It's like solving a mystery!"
- "Remember, it's okay to make mistakes in math. That's how we learn and grow our math superpowers!"