The Mathematics of WoodturningQuick View
AutographMaths

The Mathematics of Woodturning

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Woodturning is my absolute favourite example of volumes of revolution and in this activity we extend this to even consider Rose Engines. What's a Rose Engine you ask? Well read on to find out...
The Equations of ButterfliesQuick View
AutographMaths

The Equations of Butterflies

(1)
A set of Autograph Activities finding equations to model butterflies. Motivated by a question on Twitter to @autographmaths, I started investigating equations for modelling the shape of butterflies for which polar coordinates were helpful and then considered a moving butterfly for which cartesian coordinates were a more natural fit. A nice fun modelling exercise which could be very simply extended to other butterfly shapes, different routes, multiple butterflies, etc.
Angles in a Right-angled TriangleQuick View
AutographMaths

Angles in a Right-angled Triangle

(0)
An Autograph Activity to demonstrate why the angles in a triangle add up to 180 degrees. The interesting thing about this activity is that it has no numbers! So really it is a demonstration that the angles in a triangle when put together form a straight line. This activity was inspired by the awesome Oliver Byrne's 'The Elements of Euclid'. Mathematics is not just about numbers, using colours in this example hopefully demonstrates that.
Finding the Area under a CurveQuick View
AutographMaths

Finding the Area under a Curve

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Approximate the area under a curve using rectangles, and use Autograph Mathematics' Animation Controller to investigate what happens when the number of rectangles is increased.
IterationQuick View
AutographMaths

Iteration

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Autograph Mathematics is used to solve 2 = x³ numerically using the method of iteration.
Quadratic GraphsQuick View
AutographMaths

Quadratic Graphs

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Explore quadratic functions using Autograph Mathematics. Learn how to enter equations and use Slow Plot, Scribble Tool and the Constant Controller.
TrigonometryQuick View
AutographMaths

Trigonometry

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Graphs of trigonometric functions have an interesting link to the unit circle. In this video we investigate this link using Autograph Mathematics.
Scatter DiagramsQuick View
AutographMaths

Scatter Diagrams

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Autograph Mathematics provides a fantastic way to visualise the error in lines of best fit. In this activity we use this visualisation to manually find the line of best fit.