There are **16** NRICH Mathematical resources connected to **PrimaryGames-Geometry**, you may find related items under Primary Games.

Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a square.

Choose the size of your pegboard and the shapes you can make. Can you work out the strategies needed to block your opponent?

Board Block Challenge game for an adult and child. Can you prevent your partner from being able to make a shape?

Board Block game for two. Can you stop your partner from being able to make a shape on the board?

Seeing Squares game for an adult and child. Can you come up with a way of always winning this game?

Many natural systems appear to be in equilibrium until suddenly a critical point is reached, setting up a mudslide or an avalanche or an earthquake. In this project, students will use a simple. . . .

In this game, try not to colour two adjacent regions the same colour. Can you work out a strategy?

This game challenges you to locate hidden triangles in The White Box by firing rays and observing where the rays exit the Box.

Take it in turns to make a triangle on the pegboard. Can you block your opponent?

A game for two people that can be played with pencils and paper. Combine your knowledge of coordinates with some strategic thinking.

A game for 1 person. Can you work out how the dice must be rolled from the start position to the finish? Play on line.

A shape and space game for 2, 3 or 4 players. Be the last person to be able to place a pentomino piece on the playing board.

A game for 2 players. Given a board of dots in a grid pattern, players take turns drawing a line by connecting 2 adjacent dots. Your goal is to complete more squares than your opponent.

A game for 2 people. Take turns joining two dots, until your opponent is unable to move.