This Human Biology program, designed for use both in the classroom and at home, offers a choice of four topics: the heart; the circulation system: arteries, veins and capillaries: and blood flow. In the first section, the user has to label eleven parts of the heart, such as pulmonary arteries and veins, valves and the aorta. The correct labelling can be viewed before the test sequence, and the computer marks the answers given in the test on the screen.

Section Two the circulation system involves the same sort of labelling activity, again with the option of seeing the correct version first. The demonstration showing the functions of arteries, veins and capillaries is very clear and informative, and then the user is asked some questions on the topic to show understanding of the different functions performed.

In the final section, the computer demonstrates the route taken by blood as it flows through the circulatory system, and the user can select the starting point from the following list: liver, intestine, kidney and lower body. The path taken is plotted graphically on a diagram of the circulatory system.

This is a very useful program, and I particularly liked the way the computer marks the answers on the screen. Students of GCE 0 level and CSE will find it a helpful self test resource. It is available on cassette at £10 or on Microdrive at £12.

Control keys: single key commands
Keyboard play: fast
Use of colour: limited to red, white and black
Graphics: very good diagrams