Get your fish in line and reel in nonstandard measurement. Line up fish end-to-end to introduce students to measurement by comparing and estimating sizes and lengths. Relationally sized translucent plastic fish are flat, like a ruler, to get kids ready for real measurement. Fish also connect so they can be picked up for vertical measurement. Fish are 4, 8, and 12 cm long. Set includes 66 fish in 6 colors (12 large, 18 medium, 36 small) and Activity Guide. Grades 1+/Ages 6+