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# Lesson Plan Template

• #### Vocabulary

• Subtraction: Taking away one number from another.
• Minus: The symbol (-) used to indicate subtraction.
• Difference: The result of subtracting one number from another.

### Materials and Preparation

• Whiteboard and markers
• Number line
• Counters or small objects for demonstration
• Subtraction flashcards
• TeachTastic Worksheet Pack for subtracting 2

### Learning Objectives

• Students will understand the concept of subtraction as taking away.
• Students will be able to subtract 2 from any given number up to 20.
• Students will demonstrate proficiency in writing subtraction sentences.

### Introduction

Begin the lesson by asking students if they have ever given away 2 items from their collection of toys or candies. Use this context to explain subtraction. Write a simple problem on the board, such as "5 - 2". Show 5 counters, remove 2, and count the remaining counters. Repeat with several examples using numbers up to 10 to demonstrate the concept.

### Explicit Instruction/Teacher modeling

Explain that subtracting 2 means taking 2 away from a number. Use a number line to show how to count back two steps. For instance, start at 7, count back two steps to land on 5, illustrating "7 - 2 = 5". Write several examples on the board and solve them together with the students.

### Related Products

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### Guided Practice

Distribute counters to students and ask them to solve subtraction problems such as "8 - 2", "10 - 2", and "12 - 2" using their counters. Walk around the room to assist and ensure understanding. After practicing with counters, have students write the corresponding subtraction sentences on their whiteboards.

### Independent Practice

Provide students with a worksheet from the Worksheet Pack that contains problems like "15 - 2", "9 - 2", and "14 - 2". Encourage students to first use counters or a number line if needed and then solve the problems by writing the subtraction sentences.

## Support

• Work with small groups or one-on-one for students who need extra help.
• Use additional visual aids such as number lines or subtraction charts.
• Provide extra practice worksheets for further reinforcement.

## Extension

• Provide challenging problems that involve subtracting 2 from larger numbers.
• Introduce word problems that require subtracting 2.
• Pair students to create and solve their own subtraction problems.

### Assessment

Use the assessment worksheet from the Worksheet Pack to evaluate students' proficiency in subtracting 2 from various numbers. The assessment should include both visual problems (with counters or number lines) and written subtraction sentences.

### Review and closing

Review the key points of the lesson by solving a few problems together as a class. Address any common misconceptions, such as misunderstanding the direction of subtraction on the number line or forgetting to count back two steps. Allow students to ask any final questions and clarify any remaining doubts. Encourage students to share their observations or any curiosities they have about subtraction.

### Misconceptions

1. Students may count forward instead of backward.
2. Students may forget to subtract 2 and instead subtract 1.
3. Students may misinterpret the subtraction sign and add instead.
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