This activity works on number order. You can make a set for numbers 0-11 and a set for 10-21. All you need to do is run the caterpillar sheet onto different colors of paper.
Your students will gather all of one color caterpillars and put them in number order. Next, they will color the caterpillar on the recording sheet that color, then write the numbers in order on the lines.
Use this while you do your unit on the butterfly life cycle, or as a fun Spring review!