Set of 54 interlocking foam fish (9 each of 6 different colors-red, yellow, blue, green, purple, orange.) The fish are numbered 0-20 and feature dot representations for the numbers 1-9. Students can count by tens to 100 and create addition and subtraction number sentences using the symbols +, -, and =. Each fish has an eye hole for lacing. Includes 2 laces and an activity sheet. Packaged in a transparent plastic jar with screw-top lid and handle. This unique set of foam fish is non-toxic and washable and allows young children to develop their number recognition skills through activities that involve matching numbers, names, and dots, plus patterning and sequencing.