Count it, pay it, keep the change!
Penny's Coin Carnival teaches US coins the way kids actually trip over them: size is not value. The coins here are drawn at true relative size — the dime really is the smallest and the quarter the biggest — so "the little one is worth TEN" becomes something your child has seen, not just heard.
Booth 1 builds skip-counting (tap coins in any order and count the running total out loud), Booth 2 moves to paying exact amounts with a fill-up meter, and Booth 3 adds fewest-coins thinking and first change (count up from the price). Values are stamped on the coins early, fade as recognition grows, and quietly return if your child gets stuck — help is never more than one miss away.
Every round earns a carnival ticket; tickets buy shiny prizes for Penny's nest on the title screen. Play along at home: raid the real coin jar, set up a pretend stall, and let your child be the one who makes change.