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strands.number-sense.h1

Number Sense

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strands.algebra.h1

Algebra

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strands.geometry.h1

Geometry

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strands.measurement.h1

Measurement

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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

Analyzing 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

Visualize 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

Henk Hietbrink

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  • Zonnewijzers

    Book

    Henk Hietbrink

  • Sundials

    Book

    Henk Hietbrink

  • Angle at Sunrise

    Activity

    Henk Hietbrink

  • Hoek bij Zonsopkomst

    Activity

    Henk Hietbrink

  • Belangrijkste hoeken in de Hemelbol

    Activity

    Henk Hietbrink

  • Horizontale zonnewijzer

    Activity

    Henk Hietbrink

  • Terminology in Fortification

    Activity

    Henk Hietbrink

  • Fortification in the Netherlands in the 17th century

    Book

    Henk Hietbrink

  • About muqarnas

    Activity

    Henk Hietbrink

  • Sundail Ibn Tulun

    Activity

    Henk Hietbrink

  • De klok van den Buitenman

    Activity

    Henk Hietbrink

  • Analemmatische Zonnewijzer

    Activity

    Henk Hietbrink

  • Schetsen van "tuych‑werckelycke" kegelsneden

    Book

    Henk Hietbrink

  • fvs_300: Ellipsograaf van Simon Stevin

    Activity

    Henk Hietbrink

  • fvs_331: Parabolograaf Frans van Schooten

    Activity

    Henk Hietbrink

  • fvs_320 Hyperbolograaf van Frans van Schooten

    Activity

    Henk Hietbrink

  • fvs_299 Ellipsograaf van Frans van Schooten

    Activity

    Henk Hietbrink

  • fvs_315 Ellipsograaf van Frans van Schooten

    Activity

    Henk Hietbrink

  • fvs_324: Hyperbolograaf Frans van Schooten

    Activity

    Henk Hietbrink

  • fvs_318: Ellipsograaf van Frans van Schooten

    Activity

    Henk Hietbrink

  • Ellipsograaf van Viktor Blåsjö

    Activity

    Henk Hietbrink

  • Hyperbolograaf van Viktor Blåsjö

    Activity

    Henk Hietbrink

  • fvs_334 Parabolograaf Frans van Schooten

    Activity

    Henk Hietbrink

  • fvs_314 Hyperbolograaf van Frans van Schooten

    Activity

    Henk Hietbrink

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