Self Check Exercise

Self Check Exercise

Critique

Opening

Critique

Review your work on the Self Check problem and think about these questions:

  • How can you check that your problem matches the inequality?
  • How can you check that your solution to the inequality is correct?
  • Does your answer to the problem make sense?

Math Mission

Opening

Apply your understanding of algebraic inequalities to solve problems.

Revise Your Work

Work Time

Revise Your Work

Work with your partner to revise your work on the Self Check problem based on the previous questions and feedback from your partner.

Check that your solution is correct, and show the method you used to solve the inequality.

Self Check

  1. Solve the inequality (show all your steps) and represent the solution on the given number line.

    8x + 10 ≤ 66

  2. Write a word problem that could be solved using the inequality.

  3. Write a sentence that answers your word problem.

Extend Your Work

Work Time

Extend Your Work

Use what you learned from the Self Check problem to approach this similar task.

  • Solve the inequality (show all your steps) and represent the solution on the given number line:

    4x + 8 > 80

  • Write a word problem that could be solved using the inequality.

  • Write a sentence that answers your word problem.

HANDOUT: Solving Inequalities
INTERACTIVE: Graph an Inequality

Prepare a Presentation

Work Time

Prepare a Presentation

  • Explain the process you used to revise your work.
  • Describe how you applied what you learned from the Self Check problem to solve a similar problem.

Make Connections

Performance Task

Ways of Thinking: Make Connections

Take notes your classmates’ approaches to revising the Self Check problem and applying what they learned to solve a similar problem.

Hint:

As your classmates present, ask questions such as:

  • Why didn't you reverse the direction of the inequality sign?
  • Why did you use a closed circle on your number line?
  • How do you know that your number line shows all the solutions to the inequality?
  • Are all the numbers on the number line solutions to the problem? Why or why not?

Reflect On Your Work

Work Time

Reflection

Write a reflection about the ideas discussed in class today. Use the sentence starter below if you find it to be helpful.

Something I have learned that has really helped me to solve inequalities is …