Objective

By the end of this lesson, you will be able to understand and perform basic addition and subtraction with numbers up to 20.

Materials and Prep

Materials: Pencil, paper, and number flashcards (0-20).

Prep: Familiarize yourself with the numbers 0-20 and have the number flashcards ready.

Activities

1. Number Flashcards: Use the number flashcards to practice counting from 0 to 20. Then, have the student pick a number and ask them to tell you the number that comes before and after it.

2. Addition Fun: Using the flashcards, create simple addition problems (e.g., 3 + 4) and have the student count the total number of objects represented by the two numbers.

3. Subtraction Stories: Create simple subtraction stories (e.g., "There were 8 apples, and 3 were eaten. How many are left?") and have the student act out the story using the flashcards to find the answer.

First Grade Talking Points

• "Let's count together from 0 to 20. What comes after 10? That's right, it's 11!"
• "Now, let's practice adding numbers. If we have 5 apples and we add 3 more, how many do we have in total? Let's count them together."
• "Here's a subtraction story: If we have 10 balloons and 4 fly away, how many are left? Let's use the flashcards to find the answer."