The unit builds on ideas introduced in unit 7A 'Cells', unit 7B 'Reproduction' and in unit 7D 'Variation and classification'. This unit provides opportunities to revisit and revise topics met in other units in years 7 and 8. With some pupils, teachers may wish to concentrate on some of the new topics, extending activities, and with others to spend more time on revision of previous work.
The unit is closely related to unit 9D 'Plants for food', which considers environmental influences on food production.
There are opportunities for citizenship, PSHE and sex education to be linked to this unit.
The historical impact of scientific discovery is covered in unit 20 'Twentieth-century medicine' and unit 21 'Scientific discoveries' in the history scheme of work.
This unit lays the foundation for work in key stage 4 on inheritance and genetics.
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