December 5, 2017 Joshua Clark Book and Gadget of the Week December 5, 2017 Joshua Clark Book of the Week: Adventures in Group Theory: Rubik's Cube, Merlin's Machine, and Other Mathematical Toys Buy it here on Amazon! Gadget of the Week:Star Wars SpatulaUse the force to help you grill with this Star Wars spatula! Buy it here on Amazon! Joshua Clark
