Math Mind Hack: imagine replacing one object with another

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Asking “What if?..” always opens up mathematical possibilities. But this hack is about scale analysis, ratio and proportion, and other spatial reasoning skills. Yet it also helps with general problem-solving and imagination.

Photo sources: the skies; the hands; eye/mouth.

It’s a remake of my more general mini-poster. I like this version better, because it has clearer visual structure and a more doable call to action.