Resource Portal

Here you can find STEM education resources.

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Centres of a Triangle

Construct some of the centres of a triangle and investigate relationships between them, discovering the Euler Line

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Topic:  Mathematics

Tags: Circles, Zeros, Geometry

Reflection

Experience reflection dynamically: relationships between the object, the image and the position and orientation of the mirror.

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Author: Jay Timotheus

Topic:  Mathematics

Tags: Reflection, Geometry

Similar Shapes

A dynamic approach to enlargement and similarity

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Author: Jay Timotheus

Topic:  Mathematics

Tags: Geometry, 2D shapes

Squaring the Circle

The classic geometry problem of "squaring the circle"

Editor: Barrie Galpin

Author: Adrian Oldknow

Topic:  Mathematics

Tags: History of maths, Geometry

Mediators of Triangles

Investigate where mediators of different triangles meet

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Topic:  Mathematics

Tags: Geometry

Dissecting squares

A square is dissected to form three triangles and a quadrilateral. What fraction of the square is each part?

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Topic:  Mathematics

Tags: Fractions, Scattergraphs, Algebra, Geometry

Connecting Algebra, Geometry and Graphs

Move from words to symbols, to geometric representations, to plotted points and finally to graphs.

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Author: Allan Duncan

Topic:  Mathematics

Tags: Linear, Quadratic, 2D shapes, Letters and symbols, Geometry, Algebra

Circle Angles

Seven activities in which students investigate angles in circles using basic geometric constructions.

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Topic:  Mathematics

Tags: Angles, Circle theorems, Geometry

Enlargement/reduction from the origin (template)

A ready-made Graphs page for enlargements centred at the origin.

Publisher: Texas Instruments UK

Editor: Christopher Rath

Topic:  Mathematics

Tags: Enlargement and reduction, Geometry

The arbelos

Investigate relationships between radii of the semicircles and the perimeter and area of this interesting shape

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Author: Allan Duncan

Topic:  Mathematics

Tags: Perimeter, Area, Circles, Geometry

Dimensions of a Circle

Derive the formulae for the circumference and area of a circle using multiple representations.

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Author: Allan Duncan

Topic:  Mathematics

Tags: Circumference, Area, Circles, Geometry

Semigrams

Investigate shapes formed by joining mid-points of adjacent sides of a quadrilateral.

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Topic:  Mathematics

Tags: 2D shapes, Geometry