Math9-12+
Equation Escape: Integer Cipher Math Activity
By Michael A.
A fun, escape-room-style activity for 9th graders that practices multiplying and dividing positive and negative integers, evaluating two-step equations at given values of x, and checking whether a value is a solution. Students work in teams through four locks, with answers collected for a final cipher, making it well suited to a collaborative 45 to 60 minute block.
Customize for your classroom
Teacher Guide & Tips
- Introduce the collaboration rules and have teams assign roles (checker, recorder, solver) before starting Lock 1, which focuses on sign rules for integer operations.
- Discussion question: Why does the product of two negative numbers come out positive, and how does that rule carry over to division?
- Scaffold for struggling students: provide a sign-rule reference card and have them rewrite each problem with the sign decided first before computing the magnitude.
- Extension for advanced students: ask them to write their own two-step equation lock and a set of candidate x-values that include one non-solution for a classmate to check.
- Estimated time: about 45 to 60 minutes, depending on how long teams spend on the final cipher step.
Math9-12+
Equation Escape: Integer Cipher Math Activity
By Michael A.
A fun, escape-room-style activity for 9th graders that practices multiplying and dividing positive and negative integers, evaluating two-step equations at given values of x, and checking whether a value is a solution. Students work in teams through four locks, with answers collected for a final cipher, making it well suited to a collaborative 45 to 60 minute block.
Customize for your classroom
Teacher Guide & Tips
- Introduce the collaboration rules and have teams assign roles (checker, recorder, solver) before starting Lock 1, which focuses on sign rules for integer operations.
- Discussion question: Why does the product of two negative numbers come out positive, and how does that rule carry over to division?
- Scaffold for struggling students: provide a sign-rule reference card and have them rewrite each problem with the sign decided first before computing the magnitude.
- Extension for advanced students: ask them to write their own two-step equation lock and a set of candidate x-values that include one non-solution for a classmate to check.
- Estimated time: about 45 to 60 minutes, depending on how long teams spend on the final cipher step.