Professor Tobbs' activities are not concerned with memorizing. Children are not parrots. Professor Tobbs' activities are not concerned with endless, mindless practice. Children are not robots. Professor Tobbs' activities are concerned with thinking and developing important ideas.
Children are thinkers.
Professor Tobbs' activities are fun and addictive. We've lost a lot of sleep staying up late trying these out. In general, no. One very important role is to get to know your child so well that you can match problems to child's abilities and interests. Fit the activities to your child.