By Jean Marie Linhart, posted in 2009. Linhart argues that learning to do math is like training for a marathon: it takes regular practice. The 15 minute rule (cited here) is bookmarked separately - click linhart tag.
By Jean Marie Linhart, posted 2009. Outlines the idea that, if you are struggling at something, it is best to practice it regularly for 15 minutes/day. Application to math homework is included.