KS4 Consider some of the problems associated with size in animals. Use Plasticine cubes of different side lengths (1cm, 2cm, 3cm and 4cm) and calculate the surface area-to-volume ratio of each. Draw graphs to show the relationship between this ratio and side length. Find out if there is a relationship with mass too. Do the well-known investigations modelling heat loss and gain in animals: with different sizes of container, monitor hot water cooling or ice melting and discuss how the findings relate to temperature regulation in mammals of different sizes . Ask students how these observations could apply to dinosaurs.
KS5 Look in standard texts for information about the geological record and trace the way animals have become extinct. Consider the trilobite, the sabre-toothed tiger and the dodo as well as specific dinosaurs, and examples of very recently extinct species, such as the Spanish Mountain Goat (see news.bbc.co.uk1hiscitech598799.stm)