Stage: 3 Challenge Level: 
This problem offers an interactive environment that introduces students to moments of force by asking them to consider how a balance is affected by altering the weights and the distances from the centre.
This problem is a follow up to Balancing 1 and Balancing 2.
Computer-based. Direct & inverse proportion. Interactivities. Moment of a force. Games. Visualising. biology. Working systematically. Learning through exploration. Generalising.
Published January 2006.
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