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Dudeney's puzzle + lesson plan
Author:
Ivan De Winne
Dudeney's famous haberdasher puzzle (1908) Cut an equilateral triangle into four pieces that can be arranged to form a square with the same area
GeoGebra
New Resources
အခြေခံ data အခေါ်အဝေါ်များ
Limits in 3D
Domino Chain Reaction
גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם
bewijs stelling van Pythagoras
Discover Resources
PMC 2012-13 Q7
Algebra Tiles
Angles at a Point
Atom logo study (I)
Produs scalar - exerciții
Discover Topics
Derivative
Trigonometry
Differential Equation
Symmetry
Random Variables