Are you students working on mastering main idea?! This activity is an awesome hands, on, engaging, group centered activity for your literacy stations! Directions: There are 2 options for sets of sentences. Choose 1 and follow these steps: Print and cut all sentence strips. Mix the main idea sentences with the supporting detail sentences. Students will sort out which sentences are main ideas, and determine which 3 details go with each main idea. They will then choose one main idea set and write it down on their answer sheet. There is also a modified version, as seen below, where you are instructed to print the main idea sentence strips on different colored paper than the supporting detail sentence strips, for easier sorting.