Overview / Description:

This lesson will help students understand why it is important to check their work after they complete a math problem. They will be searching other students work to find a mistake in the work they completed.

Learning goals/objectives:

After completing this activity, students should be able to . . .

• check their work.
• explain their work.
• understand the importance of checking their work for mistakes.

Content Standards:

Wisconsin Standards for Mathematics

Mathematical Practices

Make sense of problems and persevere in solving them.

Construct viable arguments and critique the reasoning of others.

Attend to precision.

Algebra: Reasoning with Equations and Inequalities

CCSS.MATH.CONTENT.HSA.REI.A.1

Explain each step in solving a simple equation as following from the equality of numbers asserted at the previous step, starting from the assumption that the original equation has a solution. Construct a viable argument to justify a solution method.

Educational Frameworks

B-LS 1. Demonstrate critical-thinking skills to make informed decisions

B-LS 9. Gather evidence and consider multiple perspectives to make informed decisions

Materials:

This can be used with any type of solving unit. I will be using this in my Tech Math class in our solving equations unit.

The teacher should have enough problems for one for each student.  Multiple students could solve the same question.

Assessment:

Teacher will collect the papers that have been completed and check over what the students completed.

Exit Slip: List two ways you will pay attention to the quality of your work in the next week.

Wrap-Up:

Class discussion why checking your work is important.

Extension Activity (for intervention or enrichment):

Students could video their response and where they found the mistakes.

Differentiation - students could work in pairs to create an incorrect problem and to correct the problem in another pair's work.