Helen Walker and Karen Ashforth from Birley...

A measuring cylinder is shown with divisions marked in millilitres. Water is poured at a constant rate into the cylinder. The challenge is to graph the volume of water against time. The resulting graph is linear.

Water volume video

This resource, from Siemens UK, encourages students to appreciate the importance of clean water and the problems that may arise in the absence of it. Students consider soluble and insoluble pollutants and methods of filtration. They then explore contamination by microorganisms, water-borne diseases and the...

This film, from Twig World, explores some of the many ways to explore the Earth and its physical and 'human' features. The key points made in the film are: •Maps have been used by man throughout history to explain and navigate the world. •Traditionally, maps are two-dimensional drawings that use scale to map the...