The point to memorizing math facts is to help your child with automaticity.
While you do this they are memorizing your pin number.
It is sometimes tempting to rush and have kids start memorizing facts.
The Dynamic Pattern Theory of motor learning suggests that the brain is more efficient at memorizing movement patterns than it is at remembering muscular isolations.
If you can't remember a grocery list you could have trouble in these sports; part of a player's responsibility is memorizing the playbook.
