
Double Trouble
Race through Twin Town with doubles, halves, near doubles and double-and-halve tricks for faster mental math.
4 multiplayer classroom games aligned to Common Core standard 3.OA.B.5 (often written 3.OA.5). Pick one to practice this standard with your whole class on a smartboard or Chromebooks, with no student logins. Every game has a free demo.

Race through Twin Town with doubles, halves, near doubles and double-and-halve tricks for faster mental math.

Your bingo card is made of problems. Solve the missing numbers to stamp squares and get four in a row.

The Thanksgiving edition of Double Trouble. Race along the Harvest Hollow Trail to the Feast Table with doubles, halves, near doubles and double-and-halve tricks.

A team review game for every 3rd Grade math standard. Teams claim tiles on a map by answering questions, and can steal each other's tiles. Play a full review or pick the standards you want. The results show % correct for each standard.
The All-Access Teacher License includes every game, every grade and all future games.