Math in Motion course resources coming soon!
Click any square to eat it, along with everything above it and to its right. The player forced to eat the bottom-left square (the poisoned piece) loses.
Click any stone to take it and all stones to its right in that pile. The player who takes the last stone wins.
Click a stone to take it and all stones to its right. You can take between 1 and the move limit stones per turn. The player who takes the last stone wins.
A piece of paper is secured at the lower-left corner (shown in blue). Hover over any grid line and click to make a horizontal or vertical chop. Any paper no longer connected to the anchor falls into the water. The player who makes the last chop wins.
Each dot represents one person in a population. At every step, infected individuals may spread the disease to their neighbors, and may also recover. Watch how a single infection can sweep through a community — or fizzle out.