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strands.number-sense.h1

Number Sense

Understanding numbers, their relationships and numerical reasoning

strands.algebra.h1

Algebra

Using symbols to solve equations and express patterns

strands.geometry.h1

Geometry

Studying shapes, sizes and spatial relationships in mathematics

strands.measurement.h1

Measurement

Quantifying and comparing attributes like length, weight and volume

strands.operations.h1

Operations

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strands.statistics-probability.h1

Probability and Statistics

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strands.number-sense.h1

Number Sense

Understanding numbers, their relationships and numerical reasoning

strands.algebra.h1

Algebra

Using symbols to solve equations and express patterns

strands.geometry.h1

Geometry

Studying shapes, sizes and spatial relationships in mathematics

strands.measurement.h1

Measurement

Quantifying and comparing attributes like length, weight and volume

strands.operations.h1

Operations

Performing mathematical operations like addition, subtraction, division

strands.statistics-probability.h1

Probability and Statistics

Analysing uncertainty and likelihood of events and outcomes

Community Resources
Get started with our Resources
GeoGebra

Calculator Suite

Explore functions, solve equations, construct geometric shapes

GeoGebra Graphing

Graphing Calculator

Visualise equations and functions with interactive graphs and plots

GeoGebra Geometry

Geometry

Explore geometric concepts and constructions in a dynamic environment

GeoGebra 3D Calculator

3D Calculator

Graph functions and perform calculations in 3D

GeoGebra Scientific Calculator

Scientific Calculator

Perform calculations with fractions, statistics and exponential functions

GeoGebra Notes

Notes

Explore our online note taking app with interactive graphs, slides, images and much more

App Downloads
Get started with the GeoGebra Apps

Terry Tam

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  • Petr-Douglas-Neumann Theorem

    Activity

    Terry Tam

  • Terry's Maths Collections

    Book

    Terry Tam

  • What is the length of the side of equilateral triangle?

    Activity

    Terry Tam

  • Equilateral Triangle on 3 Concentric Circles

    Activity

    Terry Tam

  • Shortest-perimeter Inscribed Triangle

    Activity

    Terry Tam

  • Why same areas? (3)

    Activity

    Terry Tam

  • Why same areas? (2)

    Activity

    Terry Tam

  • Why same areas?

    Activity

    Terry Tam

  • Intersecting Chords Theorem and Secant-Tangent Theorem

    Activity

    Terry Tam

  • Why ratio difference is the same?

    Activity

    Terry Tam

  • Why 6 points are concyclic?

    Activity

    Terry Tam

  • Why parallelogram is always formed?

    Activity

    Terry Tam

  • Napoleon Equilateral Triangles

    Activity

    Terry Tam

  • Ptolemy Theorem

    Activity

    Terry Tam

  • Obtaining Fractions via Folding Paper

    Activity

    Terry Tam

  • Incircle and Excircles

    Activity

    Terry Tam

  • Inner/Outer Triangles

    Activity

    Terry Tam

  • Viviani's Theorem

    Activity

    Terry Tam

  • QM-AM-GM-HM Inequality

    Activity

    Terry Tam

  • How to copy a line segment with a collapsing compass?

    Activity

    Terry Tam

  • All about Pythagoras theorem...

    Activity

    Terry Tam

  • Why always a circle tangent?

    Activity

    Terry Tam

  • Where am I?

    Activity

    Terry Tam

  • Morley Equilateral Triangles

    Activity

    Terry Tam

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