It’s time to investigate! In this no-prep CSI Mystery Activity, students must use critical thinking, teamwork, and knowledge of 2 Digit Addition With & Without Regrouping to solve a fun and thrilling crime case. Students will need to answer 20 questions about adding 2 digit numbers. There are 5 stations; each station includes 4 questions and 1 clue. Each clue helps rule out one innocent suspect. By the end of all 5 stations, students will eliminate 5 innocent suspects and figure out which one o