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# Achi Chance Game

Description

Achi is a strategy game from Ghana and is a more advanced form of noughts and crosses. Players take turns putting their markers on a 3x3 board, with the aim of trying to get three in a row. While playing, students will be required (unconsciously) to collect data and make predictions based on probability, to develop their own strategy for winning.

These reflective strategies (“If I do this, then they will do that.”) develop Mathematical thinking and problem solving.

Engage your students in a discussion using questions like:

• “Was there a pattern that you observed to winning?”
• “Did you change how you played after learning how the game worked?”
• “Does it make a difference who goes first? Do you play differently if you go second?”
Suitable for
• Fast Finishers
• Relief Teachers
Lesson Structure
• Rotations / Group Work
• Class Activity
Differentiation

### Modifications

Have students begin by playing noughts and crosses and talking through different strategies for that game, before introducing Achi.

### EXTENSIONS

Instead of four pieces for each player, you can reduce the number of markers to three, making a game known as ‘Three Men’s Morris’ or ‘Nine Holes’.