aidemia--modules-lessonplan_request	Titles of parts of the lesson must be formatted as headings
What to create	Lesson plan
Which subject	Mathematics
What topic	LESSON 18 Determine whether number sentences are true or false.
What length (min)	30
What age group	Year or Grade 1
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Lesson Plan: Mathematics - Lesson 18: Determine Whether Number Sentences are True or False

Grade Level: 1
Subject: Mathematics
Duration: 30 minutes
Topic: Determine Whether Number Sentences are True or False

Objectives

By the end of this lesson, students will be able to:

• Understand the concepts of true and false number sentences.
• Identify true and false number sentences based on basic addition and subtraction.

Materials

• Whiteboard and markers
• Number cards (1-10)
• Worksheets for practice
• Counting manipulatives (e.g., blocks or counters)

Introduction (5 minutes)

1. Warm-up Activity:

   • Begin by asking students to recall what a number sentence is. Provide examples such as "2 + 3 =" and "5 - 1 =".
   • Ask students to give examples of number sentences they remember.

2. Objective Presentation:

   • Explain that today, they will be learning how to figure out if number sentences are true (correct) or false (incorrect).

Direct Instruction (10 minutes)

1. Teaching True and False:

   • Write the number sentence "2 + 2 = 4" on the board.
   • Ask the class if it is true or false and why. Discuss that because 2 plus 2 equals 4, this sentence is true.
   • Write another number sentence "3 + 1 = 5" and evaluate together. Discuss that it is false because 3 plus 1 equals 4, not 5.

2. Explaining Number Sentences:

   • Provide a few more examples and have the class respond whether they are true or false:
     • "5 - 2 = 3" (True)
     • "1 + 1 = 3" (False)
     • "4 + 1 = 5" (True)
     • "6 - 3 = 4" (False)

Guided Practice (10 minutes)

• Distribute worksheets that contain multiple number sentences.
• Students will work in pairs to determine which sentences are true and which are false.
• Monitor progress, providing support as needed, and encourage students to explain their reasoning to each other.

Independent Practice (5 minutes)

• Have students complete the last few number sentences on the worksheet individually.

Closing (5 minutes)

• Review answers as a class.
• Ask students to raise their hands if they found a true sentence and share one example.
• Sum up the lesson by emphasizing the importance of checking our work in mathematics to find out the truth of number sentences.

Homework

Task

Complete the following number sentences. Indicate whether each statement is true (T) or false (F):

1. 3 + 2 = 5 _____
2. 4 - 1 = 2 _____
3. 6 + 1 = 8 _____
4. 5 - 2 = 3 _____
5. 1 + 1 = 2 _____

Correct Answers

1. 3 + 2 = 5 T
2. 4 - 1 = 2 F (Correct answer is 3)
3. 6 + 1 = 8 F (Correct answer is 7)
4. 5 - 2 = 3 T
5. 1 + 1 = 2 T