Math For Love
Dan Finkel & Katherine Cook run a wonderful site that provides math activities for children. Dan has a great TED talk here:
Scott H Young
Scott is a learning fanatic, constantly challenging himself to learn concepts from Calculus to Chinese. I'm a fan of the "Feynman Technique", where you learn new concepts by attempting to explain it to yourself in simple terms:
Mind Your Decisions
Presh Talkwalker has fun ways to explore new concepts in math and economics.
Uri Bram
Uri writes about complex subjects wonderfully. Check out his bestselling book Thinking Statistically on Amazon.
