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Which subject	Mathematics
What topic	Pre algebra ( introduction to Variables and Expressions
What length (min)	30
What age group	Year or Grade 7
Class size	20
What curriculum
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Check previous homework
Ask some students to presents their homework
Add a physical break
Add group activities
Include homework
Show correct answers
Prepare slide templates
Number of slides	5
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Create creative backup tasks for unexpected moments

Lesson plan

Topic

Pre-Algebra: Introduction to Variables and Expressions

Objectives

• Understand the concept of variables in mathematics.
• Identify and create algebraic expressions.
• Evaluate expressions by substituting values for variables.

Materials

• Whiteboard and markers
• Graph paper
• Printed handouts with example problems
• Projector for displaying slides
• Calculators (optional)
• Homework worksheets

Grade/Age Group

Year/Grade 7

Subject

Mathematics

Class Size

20 students

Lesson Duration

30 minutes

National Curriculum Alignment

This lesson aligns with the Common Core State Standards for Mathematics, specifically:

• CCSS.MATH.CONTENT.7.EE.A.1: Apply properties of operations as strategies to add, subtract, factor, and expand linear expressions with rational coefficients.

Lesson Structure

Step Number	Step Title	Length (minutes)	Details
1	Introduction to Variables	5	Introduce the concept of variables using simple examples (e.g., x = unknown). Discuss real-life examples where variables are applicable.
2	Identifying Expressions	10	Present common algebraic expressions. Engage with students to identify the variables and constants in given expressions.
3	Creating Expressions	5	Have students create their own algebraic expressions based on given scenarios. Guide them through writing variables and constants.
4	Evaluating Expressions	5	Introduce how to evaluate expressions by substituting values into their procedures. Provide examples and solve a few together on the board.
5	Summary and Review	5	Recap the main points of the lesson. Open the floor for any questions students may have on variables and expressions.
6	Homework Assignment	0	Assign homework that includes exercises on identifying and creating expressions. Remind students to check their work before submitting.

Homework

• Assign a worksheet with problems that include identifying, creating, and evaluating algebraic expressions.
• Students will submit the homework in class the following day. Homework will be checked for completion without any students needing to present it in front of the class.

Assessment

• Monitor student participation during the lesson.
• Review homework for understanding and accuracy. Provide feedback as necessary.

Notes

• Adjust pace based on student understanding.
• Provide additional support for students who may struggle with fundamentals of variables and expressions.

Lesson script