Have twins with sensory processing issues. One twin is weak with fine motor skills too. They are four. We use this more for sequencing or establishing patterns to be repeated, identifying colors, etc. Sometimes the twins will work with this for an hour at a time. The boy takes the sequencing sets and pretends they are trains too. He loves to pull them around on tables and floors saying, "Chugga chugga Choo Choo." The pieces can be slightly difficult to separate, so they slightly bend some of the connection tips, this creates a slight crack or looseness when connecting to the next piece. It is not anything major to us. We hope to use these for measurement when the twins are older.

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These linking inchworms are a cute and easy way for children to practice measuring. They are easy to snap together and take apart and the little inchworm on top makes them look a little bit more fun than a regular block. One tub of 72 was enough for my students to use for math workstations with 5 students each working independently.

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