These pictures display the principle of variety. The different colors of the bikes in a lines and the different color beanbags for the corn hole. Lastly the different fruits that show the are the same color but have a different feel to all of them. These pictures all show motion. In the first picture it shows that he is running. The second picture catches him landing after jumping off the bench. And the last on we see the beanbag leaving his hands after he throws it.