Class Practical: an estimate of the diameter of the Moon using a photograph of a lunar eclipse.

Practical Activity 14-16

Demonstration: an experiment carried out by Eratosthenes over 2000 years ago.

Practical Activity 14-16

Class practical: an estimate of the ratio of the Moon's distance from the Earth compared to its diameter.

Practical Activity 14-16

Demonstration: an Earth-centred model to explain the irregularity of the seasons.

Practical Activity 14-16

Demonstration: simple models to show epicyclic and retrograde motion from an Earth centred view.

Practical Activity 14-16

Demonstration: illustrating Aristarchus’ model of the solar system.

Practical Activity 14-16

Demonstration: using an onion as a model of Eudoxus' system of the Universe.

Practical Activity 14-16

Demonstration: using the celestial sphere apparatus to model the Pythagorean system.

Practical Activity 14-16

Demonstration: using the flask model of the celestial sphere to demonstrate early Greek ideas about the structure of the...

Practical Activity 14-16

Demonstration: an umbrella model of the Pythagorean system.

Practical Activity 14-16

Demonstration: the early Greek philosopher Thales, in about 600 BC, proposed a model to explain the daily motion of the stars...

Practical Activity 14-16

Class practical: a simple method for drawing an ellipse, using the two foci.

Practical Activity 14-16