Build your students' understanding of the main idea with this set of Edupress reading comprehension flash cards. Ideal for test prep, centers, or independent studying, this set of 54 cards provide an easy way to help students learn how to infer information from a text. Each card features a leveled passage followed by a multiple-choice question that asks students to choose the main idea of the passage. Reading Level 3.5-5.0. Blue Level. Grades 3-5.