There is a great course on learning how to learn by Dr. Barbara Oakley, 

Dr. Terrence Sejnowski available now on Coursera. The course may be of the great help for parents of the elementary school students, giving us tips and tricks on how to help children to learn more effectively, spend less time memorizing and turn learning into a pleasant experience. It also gives simple reasons on why gamification makes learning more effective.

Good Luck!