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What to create	Lesson plan
Which subject	Mathematics
What topic	5.3B TEKS
What length (min)	30
What age group	Doesn't matter
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Lesson Plan: Understanding 5.3B TEKS in Mathematics

Subject Area

Mathematics

Grade Level

3rd Grade

Duration

30 Minutes

Topic

5.3B TEKS - Representing and Solving Problems Involving Addition and Subtraction of Whole Numbers

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Objectives

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

1. Understand how to represent addition and subtraction problems using numbers and equations.
2. Solve addition and subtraction problems within 100.
3. Explain their thinking and reasoning as they work through problems.

Materials Needed

• Whiteboard and markers
• Worksheets with addition and subtraction problems
• Number line (for visual reference)
• Counters or math manipulatives (optional)

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Lesson Outline

Introduction (5 minutes)

• Begin the lesson by introducing the concept of addition and subtraction.
• Ask students to share examples of where they might encounter these operations in everyday life (e.g., shopping, cooking).
• Explain that today, we will learn how to solve addition and subtraction problems and represent them using equations.

Direct Instruction (10 minutes)

1. Review of addition and subtraction concepts

   • Briefly recap addition as combining numbers and subtraction as taking away from a total.

2. Introduce equations

   • Write sample addition (e.g., 34 + 25 = ?) and subtraction (e.g., 56 - 19 = ?) problems on the board.
   • Explain how to set up an equation and solve for the unknown.
   • Use a number line to demonstrate how to visualize addition and subtraction.

Guided Practice (10 minutes)

• Distribute worksheets with a mix of addition and subtraction problems.
• Work through the first problem together as a class.
• Allow students to solve the next few problems in pairs while circulating to provide support.
• Review the answers as a whole class, encouraging students to explain their reasoning.

Independent Practice (5 minutes)

• Have students complete a few additional problems on their own from the worksheet.
• Remind them to show their work and represent the problems with equations.

Conclusion (5 minutes)

• Summarize the main concepts learned in the lesson.
• Reinforce the importance of being able to solve addition and subtraction problems not just in math class but in real-world scenarios.
• Answer any questions students may have before moving on to homework.

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Homework Assignment

Instructions

Complete the following addition and subtraction problems and represent each problem with an equation.

1. Sarah has 45 apples. She buys 28 more. How many apples does she have now? (Solve for new total)
2. James had 60 stickers. He gave away 15 stickers to his friends. How many stickers does he have left? (Solve for remaining stickers)
3. There are 73 students in the gym. 12 more students joined. How many students are there now? (Solve for total students)
4. Emily had 32 cookies. She gave 9 cookies to her brother. How many cookies does she have now? (Solve for remaining cookies)

Correct Answers

1. 45 + 28 = 73 (Sarah has 73 apples)
2. 60 - 15 = 45 (James has 45 stickers left)
3. 73 + 12 = 85 (There are 85 students now)
4. 32 - 9 = 23 (Emily has 23 cookies left)

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Reflection

• After the lesson, reflect on what worked well and what could be improved for future lessons. Consider student engagement and their understanding of the material.

End of Lesson Plan