(Michail Antonow, 2002)

ConHex is a pencil and paper game curricular for students learning about perimeter, but the most important reason to play any game like this is to get students thinking rigorously as they try to beat one another. As with most connection games – many students will make the mistake of trying to connect stealthily one space after another. After an hour you may choose to bring this mistake to everyone’s attention by showing that large jumps are often better than methodical micro steps. You’ll see this mistake in many of the games in the video above.

Download game sheets here. The numbered boards are to use with large groups where students must identify a move from a distance.

God may not play dice with the universe, but something strange is going on with the prime numbers.

Paul Erdős

Standards for Mathematical Practice

MathPickle puzzle and game designs engage a wide spectrum of student abilities while targeting the following Standards for Mathematical Practice:

MP1 Toughen up!

This is problem solving where our students develop grit and resiliency in the face of nasty, thorny problems. It is the most sought after skill for our students.

MP3 Work together!

This is collaborative problem solving in which students discuss their strategies to solve a problem and identify missteps in a failed solution. MathPickle recommends pairing up students for all its puzzles.

MP6 Be precise!

This is where our students learn to communicate using precise terminology. MathPickle encourages students not only to use the precise terms of others, but to invent and rigorously define their own terms.

MP7 Be observant!

One of the things that the human brain does very well is identify pattern. We sometimes do this too well and identify patterns that don't really exist.


Please use MathPickle in your classrooms. If you have improvements to make, please contact us. We'll give you credit 😉

Gordon Hamilton

(MMath, PhD)


Lora Saarnio