Teaching Resources For School Geometry

Created by John O'Sullivan & Digedu

We learn by example, the static examples provided in text books can fall short in explaining mathematical concepts. In these teaching resources, the provided examples come to life through animation and ensures that your students have the best possible learning experience.

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The teaching resources available include:

  • Over 40 preliminary concepts, brought to life with animation to allow your students to fully grasp the concepts.
  • 6 geometry theorems with each step animated from given to proof. This allows your students to see how the theorem develops as they would recreate it.
  • Accompanying presentation notes that:
    • Detail each step of the theorems,
    • Are downloadable and printable,
    • And are lined and spaced for your students to add their own written notes next to the slide diagrams.

Multiple media for multiple ways to teach:

  • Video playlists with voice over in time to the animations.
  • Image gallery to show picture perfect still renditions of geometry concepts and theorem steps.
  • Presentation Mode3 Types
    • Online animated slide-show.
    • Download PowerPoint version of section to your computer.
    • Step-by-step image slideshow.

School Geometry Resource Sections

Here you can find the sections of this course. Click one of the tiles below to jump to the course video for that section.

1. Preliminary Concepts.


1.1 The Basic Shapes of Geometry.

The universe may be seen as being made up of an infinite number of elements called points. The universe may also be seen as being made up of an infinite number of planes or flat surfaces. The geometry in these concepts occurs on one of these planes called pi.

2. Basic Theorems.


2.1. Prelude.

Firstly, let us examine the steps for the proof of each of the theorems.


2.2. Theorems 1-6.

Theorem 1 - With Proof.

The measure of the three angles of a triangle sum to 180 degrees.

Theorem 2 - With Proof.

An exterior angle of a triangle equals the sum of the two interior opposite angels in measure.

Theorem 3 - With Proof.

Opposite angles in a parallelogram are equal in measure.

Theorem 4 - With Proof.

The opposite sides of a parallelogram are equal in measure.

Theorem 5 - With Proof.

In a right-angled triangle the square of the length of the side opposite to the right- angle is equal to the sum of the squares of the lengths of the other two sides.

Theorem 6 - With Proof.

The measure of an angle at the centre of a circle is twice the measure of the angle at the circumference standing on the same arc.