Matching According to Length

I made Grace three sets of towers out of unifix cubes, each set being a different length so she could match them together according to their length. I initially made all six of the cube towers the same color, which Grace easily matched. Next, I made the towers with a random selection of colored cubes in order to provide some visual distraction to make the activity more challenging. Grace absolutely loved this activity and she independently matched all of the towers according to their length. She also identified and expressed to me which of the towers were the longest and shortest. Way to go, Grace!