Home › Activity Library › Activities about Ratio and Proportion 4.OA.2 Topic Activities about Ratio and Proportion 4.OA.2 Search 1 activity Topic: Ratio and Proportion 4.OA.2 × Browse full library → Does it pay to get educated? Why should students do well in school, graduate high school, or go on to college? In this activity median earnings by various education levels are explored. Students compare... Number Sense Social Studies Grades 5–8