Builder Series

Circle Theorems

Using knowledge gained from the angles section of this manual we can use circle theorems to calculate missing angles without the need for a protractor.

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Circle Theorems

Circle theorems are properties which show the relationship between angles within the geometry fo a circle

An understanding of circle theorems has many important uses, including for design and engineering work. Being able to visualise and work with angles using an understanding of the geometry of a circle allows many powerful calculations and mental plans to be made. Being able to do these mentally, without the need to use tools such as a protractor is important for design work. 

Builder Series
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Circle theorems

Use Mathomat shapes to explore and understand the midpoint theorem

Michelle Du Toit begins this inivesigation by using Mathomat shape 33, the trapezium, to draw parallel sides. She the encloses the trapezium in a triangle.

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Builder Series
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More circle theorems

Using Mathomat with circle theorems 3,4 and 5

We use Mathomat in these investigations to explore the geometry of the circle. In the first activity we use Professor Tisdell's TGT to understand circle theorem

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More circle theorems II

Using Mathomat to understand circle theorems 6 & 7.

These activities involve students in accurate, elegant, geometric construction which builds confidence in geometric reasoning through proof.

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Finding Hidden Angles, a Mathomat Adventure

Finding Hidden Angles, a Mathomat Adventure

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Use Mathomat with the finding hidden angles student book. Gain insight into the geometry of the world by understanding angle. Build confidence with maths.
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The Mathomat V7 geometry template with 72 page illustrated student manual and MAC guide by Juliet Snape. Illustrated contexts for student directed learning.
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Geometry & Beyond

Geometry & Beyond

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A series of lessons for secondary school which make use of available classroom materials, such as the Mathomat template and geometry software.
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Maths with Mathomat

Maths with Mathomat

Lesson Plans Years 4-9 & Beyond
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A series of comprehensive lesson plans developed to give teachers a glimpse of the potential for using Mathomat as an aid in the teaching of mathematics.
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This 116 page book of investigations with Mathomat reveal the passion for teaching of Craig Young, the designer of the original Mathomat.
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Learn to teach maths with Mathomat

Get a glimpse of the tremendous potential for using Mathomat as an aid to teaching mathematics.

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Using a series of Mathomat products and templates, learn maths and geometry with Pr. Chris Tisdell.

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