This Measuring Animals: How Long Am I? hands-on activity is a printable set of 40 animal picture cards, with room provided for recording the measurements, focuses on measuring length. This activity is great for early learners, kids with Autism, children with intellectual delays, and English Language Learners. The activity includes twenty cards, adapted with the pictures of the Base Ten blocks that could be used to perform the measurements and twenty cards that are not labeled with any specific units, therefore, the rulers, countable bears, Unifix cubes, and any other concrete manipulatives could be used as well. These measuring cards are a great resource for math centers. Simply print the cards on regular paper or card stock and laminate for durability.