“Team Umizoomi” is a popular animated show for preschoolers airing on Nickelodeon, solving everyday problems using math. Milly, her brother Geo and robot friend Bot work in a team, travelling in Umi ...

For children who find math difficult or frustrating, or who just like to be challenged, there are many cool math games online to play for free. But are they useful? Research shows that the brain’s ...