In case you are trying the MARS MAP Classroom Challenges for the first time, it is recommended that you read the Brief Guide for teachers and administrators before you get started.
Before the lesson, students work individually on an assessment task that is designed to reveal their current levels of understanding and difficulties. You then review their work and create questions for students to consider when improving their solutions.
Students work collaboratively building and solving equations in which the unknown appears more than once in the equation.
During a final whole-class discussion students review the main mathematical concepts of the lesson.
In a follow-up lesson, students review their initial solutions, and then use what they have learned to either revise the same introductory assessment task or complete a different task.