End of Year Activity, No Prep Sub Plans, Test Prep ReviewNothing motivates students to solve equations like a good criminal investigation.In this 12-challenge Algebra Detective mystery, Pi Day decorations — including the legendary Golden Pi Award — have vanished from Mathville Academy. Students solve one equation per clue, eliminate suspects through logical deduction, and write a fully-cited accusation to close the case. ★ What's Included:Teacher setup slide with timing, grouping, and sub-plan