multiplication heat map Full size 290 × 307 pixels Fingers in a mess! source: http://www.mathrecreation.com/2013/09/hard-times-how-to-learn-math.html Heat map ofthe most difficult times table Previous image Next imageA photo by Cristian Newman. unsplash.com/photos/zFnk_bTLApo Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *CommentName* Email* Website Save my name, email, and site URL in my browser for next time I post a comment. Notify me of new posts by email.