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📚 Encyclopedia

86 entries, written plainly, with a diagram wherever a diagram explains it better than a paragraph.

📐 Mathematics — 5 entries

📐 Mathematics AlgebraArithmetic with letters standing in for numbers — which lets you state a rule once instead of solving the same problem… 📐 Mathematics GeometryThe mathematics of shape, size and position — and the place where most students first meet the idea of proof. 📐 Mathematics Number systemsNatural, whole, integer, rational, irrational, real — each invented because the one before it could not answer a quest… 📐 Mathematics PiThe ratio of any circle's circumference to its diameter. The same number for every circle, and its decimals never end … 📐 Mathematics Statistics and probabilityMaking sense of data, and reasoning about things that have not happened yet. Both are easy to do badly and worth doing…

Ask GuruAcharya Samayeshwar