Parity Gears · The Gear Chain
15 gears in a row. Spin the first, which way does the last one turn?
About the Puzzle
15 gears in a row. Spin the first, which way does the last one turn?
4 Puzzles
The Gear Train
The Gear Chain
The Gear Ring
The Gear Workshop
Frequently asked questions
Parity Gears is tagged for Grades 2-11. Puzzles within it get harder as your child improves.
4 Parity Gears puzzles, each a fresh layout of the same rules.
No: Parity Gears plays directly in the browser, right on this page. No login, no download.
Present a real-world scenario and a question that can't be solved by direct calculation: the child has to find the underlying structure or trick (e.g. realizing every handshake gets counted twice). Builds mathematical insight, seeing why something must be true, rather than computation speed.