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  • Copy of 柱體建築師 1

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  • Copy of 方格紙上的四邊形

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  • Copy of Percentages: Selling Problems (Java Version)

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  • Parabola and Line Graphs (3)

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  • Parabola and Line Graphs (2)

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  • Parabola and Line Graphs

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  • Demo for iPad: Visualisation of Fraction Multiplication

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  • Area of a Parallelogram

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  • 1.2f Angle Addition

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  • Copy of The meaning of similar figures

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  • Copy of Lattice Method of Multiplication

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  • Copy of Locating decimals on a number line

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  • Copy of Compare Fractions

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  • Different types of Transformation on a Cartesian plane

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  • Where's my point?

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  • Tessellation starting from squares

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  • Constructing a Regular Hexagon given the length of a side

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  • What stays the same when a circle is changed (1)

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  • What stays the same when a circle is changed (2)

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  • 1.0 Basics of Geometry: Point, Line, Plane

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  • square too

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  • 1.4.2e Constructing Rectangles

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  • 1.4.2d Constructing Parallelograms

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  • 1.4.2c Common Parallelograms

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