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Explore Sequences with Excel6 November 2012

'Discover the inner structure of linear sequences by teaching the computer to generate them for you!' Striking and surprising patterns exist in sequences. Understanding their inner structure with this... more

Prism Volumes TNfree20 October 2012

The cross-section measurements of the right-angled, triangular faced prisms are 3 by 4 cm, 6 by 4cm and 6 by 8cm. The largest is therefore four times the volume of the smallest. The triangular 3 by... more

Grime Dice TNfree10 October 2012

This activity is based around a set of transitive dice which have a rather surprising set of properties. They are NOT the classic 6-faced dice with numbers one through six on each face - they are... more

Multiple Factors22 September 2012

Take a look at the picture flickr gallery below. Can you work out what numbers each design represents and what factors were used to build it? Number theory is all about seeing relationships between... more

Similar Trianglesfree18 September 2012

'Sort out the triangles so you can work out the missing lengths!' There are lots of things that we can do with the 24 triangles used in this activity (download and print below)! The simplest way to... more

Similar Triangles TN18 September 2012

A great triangle mystery! These 24 triangles can be split in to 8 groups of 3 similar triangles by matching the angles. Once in groups students can use proportional reasoning to work out the missing... more

Solve Equations Snap7 September 2012

"x" is used to represent a number we don't know, but want to find. Roll the dice and "substitute" the number on the dice into your equation in place of "x". If this "solves the equation" (i.e. results... more

Conferencesfree13 July 2012

THREE-DAY WORKSHOP at OUNDLE SCHOOL, PETERBOROUGH Richard joins the infamous TSM team and 120 workshop participants for the annual event at Oundle School in July. For the first time Geogebra forms part... more

Geometryfree10 July 2012

Here you will find support materials for some of the basic geometry capabilities of Geogebra You may wish to keep your own notes on the printed copies of the worksheets that are embedded below. more

Graphingfree8 July 2012

Here you will find support materials for some of the basic and more advanced capabilies of graphing in Geogebra. You may wish to keep your own notes on the printed copies of the worksheets that are... more