Featured Videos

Students explore the idea of indirect power – which can be both visible (a lighthouse) or invisible (magnetism).

COLD to COOL. BAND to SING. Change one letter at a time — can you find the path?

One column is an example. The other isn’t. Can your students figure out the hidden rule before the reveal?

Ready for a tricky counting and divisibility game?

Can any perfect square be written as the sum of two primes?