Or turn on your calculator, then enter 24 Ã— 21 =

After solving the algebra problem, he insists on checking the answer, but he doesn't mention checking your answer in the first video after doing the multiplication problems.

This teacher seems well-intentioned, but he hasn't thought things through and hasn't linked his videos into an overall course. Also, saying "blow your mind" several times (or just once for that matter) is inappropriate for young children.