A 7th grade MARS formative assessment lesson suitible for intro to Unit A3. Mathematical goals This lesson unit is intended to help you assess how well students are able to: Form and solve linear equations involving factorizing and using the distributive law. In particular, this unit aims to help you identify and assist students who have difficulties in: Using variables to represent quantities in a real-world or mathematical problem. Solving word problems leading to equations of the form px + q = r and p(x + q) = r. Introduction The lesson unit is structured in the following way: Before the lesson, students attempt the assessment task individually. You then review students’ responses and formulate questions that will help them improve their work. During the lesson, students work collaboratively in pairs or threes, matching equations to stories and then ordering the steps used to solve these equations. Throughout their work, students explain their reasoning to their peers. Finally, students again work individually to review their work and attempt a second task, similar to the initial assessment task.
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