UIL Number Sense Mar 2026

• khoitsma
• editor's pick, Kids (middle school and up), Mathematics, Mental Math
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A new old trick

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Navigate this blog by Category Mar 2026

• khoitsma
• Blog Navigation
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How Likely Feb 2026

• khoitsma
• Mathematics, Probability/Statistics
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How Likely Feb 2026🤔

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Looking for a and b — and I accidentally re-proved the Pythagorean theorem Feb 2026

• khoitsma
• editor's pick, Mathematics
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🤔

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Derivative — polygon properties after offsetting one point Feb 2026

• khoitsma
• Mathematics
• 0 Comments

🤔

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Centers of Gravity of the Triangle and Lean-To Trapezoid Jan 2026

• khoitsma
• Mathematics
• structural engineering
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🤔

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