Need 100 questions on volume and surface area of spheres? MathsBot can do that in a click. mathsbot.com/unitMixed?id...

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Once, I sat in on a maths lecture and the lecturer asked the room a question and nobody answered. I whispered to one of the students, “Why didn’t you answer?” He replied, “Because whatever I said it wouldn’t have made a difference to what would happen next.” I think about that often.

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Over on threads someone just use ai;dr and we all need to adopt that right quick

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Here’s a simple demo of a 2D linear classifier in @desmos.com, using a pseudo-inverse matrix. I used to need NumPy for this. Now, with the new matrix features, it works in Desmos. Much better for being able to drag the points around! www.desmos.com/calculator/6... #iTeachMath

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In #MathsToday I showed my team that one could divide fractions using common denominators. One of those things you never think about until you try it.

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