Lesson Plan: Adding and Subtracting Integers
Grade: 7th Grade Subject: Math
Learning Objective:  Students will be able to add and subtract integers using the rules of integer operations.  Students will understand the concept of positive and negative numbers and their relationship to reallife situations.
Language Objective:  Students will use appropriate mathematical vocabulary to explain the steps involved in adding and subtracting integers.  Students will engage in collaborative discussions to solve problems and justify their reasoning using complete sentences.
Materials:  Whiteboard or chart paper  Markers or chalk  Integer number line  Index cards with positive and negative numbers written on them  Exit ticket handouts
Procedure:

Introduction (10 minutes):  Begin the lesson by asking students to share any prior knowledge they have about positive and negative numbers.  Introduce the concept of integers and explain that they include both positive and negative numbers.  Show examples of reallife situations where positive and negative numbers are used (e.g., temperature, bank account balance).  Display an integer number line and explain how it represents positive and negative numbers.

Engaging Activity (15 minutes):  Divide the class into pairs or small groups.  Distribute index cards with positive and negative numbers written on them to each group.  Instruct students to arrange the cards on the number line in the correct order.  Encourage students to discuss their reasoning and collaborate with their group members.  Walk around the classroom to provide support and guidance as needed.

Lesson Development (20 minutes):  Review the rules for adding and subtracting integers:  When adding integers with the same sign, add their absolute values and keep the sign.  When adding integers with different signs, subtract their absolute values and keep the sign of the larger number.  When subtracting integers, change the sign of the second number and follow the rules for addition.  Model several examples on the whiteboard, explaining each step and using mathematical vocabulary.  Provide opportunities for students to practice solving addition and subtraction problems in pairs or individually.  Circulate the classroom to monitor progress and provide assistance where necessary.

Closure (10 minutes):  Distribute exit ticket handouts to each student.  Instruct students to solve the given problems independently and write their answers on the handout.  Collect the exit tickets to assess studentsâ€™ understanding of the lesson.  Review the answers as a class, addressing any misconceptions or questions that arise.  Summarize the key concepts covered in the lesson and emphasize the importance of using the rules for adding and subtracting integers accurately.
Exit Ticket: 1. Solve the following addition problem: 5 + (3) = __. 2. Solve the following subtraction problem: 8  (2) = __. 3. Explain in complete sentences how you would add two positive integers. 4. Describe a reallife situation where subtracting integers would be applicable.
Note: The exit ticket can be modified or expanded based on the specific needs and abilities of the students.
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