Inchimals are incredibly effective math blocks that teach measurement, number concepts, addition, subtraction, and pre-algebra! It's ideal, educational fun for all ages of children .Inchimals are 12 wooden animal blocks measuring 1 inch (the tiny ladybug) to 12 inches (the towering giraffe). With exact inch segments, written numerals, representative dots, and cute animals to boot - this learning toy is a sure winner all around!