“The secret to our brilliance is that we never stop learning, and the secret to our learning is that we never stop playing.” SecretLearningBrilliancePlaying Book:Math Games with Bad Drawings: 75 1/4 Simple, Challenging, Go-Anywhere Games―And Why They Matter Source: Math Games with Bad Drawings: 75 1/4 Simple, Challenging, Go-Anywhere Games―And Why They Matter