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A directory of useful objects found on the web for teaching Maths.
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Space and Geometry
Topic:
Triangles
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Hidden Triangles
Impossible Triangles
Investigating Triangle Area
IWB Raw#1: Angle sum of a triangle
Mathematics Academy
Mathematics Problem Solving
My Triangle, James Blunt on Sesame Street
NLVM Congruent Triangle Manipulative
Pictorial Proofs of Euclid’s Elements
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Resources on MathsFaculty
Constructing Triangles
Activity, Worksheet - Print | PDF
The area of a triangle
Explanation | PDF
Toothpick Puzzle
Activity, Hands-on, Poster | PDF
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