This bundle, for Pre-Algebra through Calculus, has three different levels of activities - in each Part 1 asks students to determine if each mathematical statement is true or false and justify their answer while Part 2 asks students to correct errors in multiple questions. These Find the Mistake activities are ideal for the first week of school for students to review fundamental math skills. The solution keys are included in this 18 page PDF resource. Level 1 includes the following skills:Proport