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 designed to reveal their current understanding and difficulties. You review their solutions and create questions for students to consider, to help improve their work.
During the lesson, students work in groups on a collaborative activity. They match representations of three-dimensional objects with two-dimensional cross-sections. Students then share their work with another group.
In a whole-class discussion, students compare and evaluate the methods they have seen and used.
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.
To help you assess how well students are able to visualize two-dimensional cross-sections of representations of three-dimensional objects. In particular, the lesson will help you identify and help students who have difficulties recognizing and drawing two-dimensional cross-sections at different points along a plane of a representation of a three-dimensional object.