Do your students need practice telling the differences between the inner planets and outer planets in our solar system? This center activity provides a total of 20 statements and illustrations that require students to determine if the inner planets or outer planets are being described.The PDF download includes the following, to allow for maximum flexibility:1. 20 printable cards for use in centers or gallery walks2. Printable student answer recording sheets 3. Printable answer key 4. Full page v