Roly needs help crossing the river to get to the party! In the kindergarten math game Jumpy: Counting by Ones from 1 to 100, players will use their knowledge of two-digit numbers to find the correct logs—or alligators!—needed to cross the river. Children will have a blast helping Roly jump from log to log while honing their number sense skills. (Hint: Use the space bar to move Roly through the game.)