This set includes 290 pieces. There are 40 double-sided dry erase mats (two of each number) numbered 1-20 and 210 fish counters.
The children can practice counting the fish as they fill up the fishbowls. They can practice writing the numbers 1-20 on each of the dry erase mats with a dry erase marker. They can separate, sort, pattern, count.... the fish. Fish bowl mats measure 10" and the cardboard fish counters are 1 1/2". This set does not include dry earse markers OR box for storage.