Clip and Flip is an easy activity for students to individual practice and check their knowledge for multiples of 3. I suggest printing this product on cardstock then folding it on the center line and laminating it to be able to get the most use. The students will place a clothespin on the multiples of 3. After they think they have found all, they will flip it over. If they see a number under their clothespin, they were correct. If the square is blank, that number is not a multiple of 3. Lastly, if they see numbers with no clothespins clipped on them, they missed a multiple of 3.