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Probability Treesfree17 September 2011
Probability is a topic that moves very quickly from that which is easily understood and intuitive to something seemingly much more complex. Sample space diagrams, probability trees, fractions decimals,... more
3D Uncovered - TN11 September 2011
This activity uses technology to help students with the notoriously difficult idea of working with 2D planes within 3D situations and thus solve problems with trigonometry in 3 dimensions.Google sketchup... more
3D Uncoveredfree11 September 2011
This activity uses the 'Free' and 'Powerful' Google sketchup application to aid the visualisation of 3D geometry problems. The third dimension can really make problems more confusing and it is a really... more
Which Wave TN30 August 2011
The discussions and reasoning that takes place during this type of activity can be incredibly valuable and effective. It is a simple idea, but so often the simple ideas can be the most effective. It... more
Which Wave30 August 2011
The repeating patterns of trigonometrical patterns can make them a little confusing and hard to follow. Conversely, it can make their properties and thus their defining equations easier to deduce.... more
Formulae:What are they?30 August 2011
'Discuss each formula altogether as a class, then find an image on google images that matches the formula. Algebra is NOT abstract' Formulae are all around us! If we look, we can see equations everywhere,... more
Wire Transformationsfree30 August 2011
These two wire curves are different representations by students of the same function: Could they both be right? You can use your body to represent a function, now its time to sculpt some wire and "feel"... more
Geometry Virtual Manipulativesfree27 August 2011
This clever applet from Illuminations should help you understand the dynamics of sound. You can hear the sound then see the animated sound wave, which has been slowed down so that you can see it. ... more
Rotation Navigation TN1 August 2011
I find that some students struggle for a long time with the idea of a centre of rotation, and that its position is defined using coordinates. This activity is a great example of how software allows... more