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One of my favorite lessons comes from Jo Boaler’s Mindset Mathematics Grade 7. In the lesson, she has students investigate the volume and surface area as you scale up the dimensions of a rectangular prism. Students begin to see that as the prism’s dimensions double, triple, or quadruple, the volume and surface area doesn’t double, triple, or quadruple, but rather it relates via exponential growth. This forces students to think about how many times bigger things are changing relative to the initial (smallest) prism.