Algebra>Solving Equations>Balancing Scales

This morning Simon was crying bitterly when he thought that the equation to calculate the resistance in a video wasn’t correct. We wrote the solution down together in detail and it was correct. I suddenly knew what the stumbling block was – Simon isn’t really familiar with solving equations yet! This is one of those cases when you work top down and hit a gap. I guess equations will be the topic of his math lessons for a while now. I love it how on Brilliant.org they start teaching the concept of equation by comparing it to scales. Here is what he accomplished today: Algebra>Solving Equations> Warmup and Balancing Scales

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