"The most powerful tool in coaching is the question - the Greek philosopher Socrates is regarded by some to have been the first coach. Among other things, he used deversified questions in his talks with his students. Here is how he did it.
19 Ridiculously Simple DIYs Every Elementary School Teacher Should Know
Have the kids stand in a circle and toss the ball to each other. Whichever math problem their thumb lands on they have to answer before tossing it to the next student. An easy DIY that only takes a blow-up beach ball and a marker. Could also be done for vocabulary words, sight words, or as question review for an exam.