September 17 is Constitution Day. Use our 5-Minute Challenge warm-up activities to commemorate this day with your students. With the Apportionment Map activity, students will analyze a map to help them answer questions about states and the amount of seats they have in the U.S. House of Representatives. The Amazing Apportionment Machine activity asks teachers to share a quick video with students to help them answer questions about congressional apportionment. An answer key for teachers is provided with this activity.