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All in one Quadrilateral!
All in one Triangle!
Area of triangles with the same base and height!
Angles using card circles
Bigger Watermelon!
Cardboard Geoboard
Conics with Carrots!
Conic Section
Egg Tangram!
Five caps from a newspaper sheet
Four triangles with six sticks!
Geometry with two triangles
Geometry with 4 Triangles
Icosahedron & Golden Rectangles!
Introduction to surface area
Paper flexagon!
Paper with no top no bottom!
Parts of a circle!
Platonic solid - Cube
Platonic solid - Dodecahedron
Platonic solid - Icosahedron
Platonic solid - Octahedron
Platonic solid - Tetrahedron
Pythagoras Tree One Side
Radius of a Circle!
Same area, different perimeter
Sectors using card circles
Simple Abacus
Simple Geoboard using Push Pins!
Sum of angles of a triangle & a quadrilateral
Square to Triangle
Equilateral triangle to square!
Square to Triangle - 2!
Square hole and coin Puzzle
Tangrams!
The T-Puzzle
Three pieces Quadrilaterals
Triangles to Quadrilaterals!
Triangle to Rectangle
Value of Pi (π)!
Visual Proof of (a+b)2
Visual Proof of the Pythagorean Theorem!
Visual Proof of the Pythagorean Theorem - 2
Walk through a postcard!
Which cylinder holds more?
Why area of circle is πr2 ?
Why are tree trunks cylindrical in shape?
Why area of triangle is 1/2 x base x height?
Make your own birthdate magic square
Place Value
Fractal Triangle
Ramanujan's Birthday Magic Square
Fraction Strips
Wheat and Chessboard Problem
Tower of Brahma
Napier's Strips
Visual Proof of (a + b + c)²
Visual Proof of (a + b)3
Angle Sum Property of a Triangle
Angle Sum Property of a Quadrilateral
Volume of a Cone and Cylinder
Angle Sum Property of a five pointed star
Angle Sum Property of a Pentagon
Angle Sum Property of a Hexagon
Pyramid Puzzle using 20 balls
Plus Puzzle - 1
Plus Puzzle - 2
Fraction Disk
Visual representation of value of Pi (π)
Circular Geoboard-Parts of the Circle
Three-in-one puzzle
Pi puzzle
Two-Piece Tetrahedron Puzzle
Square to Octagon Puzzle
Octagon to Square Puzzle
Rectangular Geoboard
Four 'T's In a Circle Puzzle
Four 'T's In a Square Puzzle
Heart Puzzle: Area of a Square and Circle