- Show, and help pupils to make, three-dimensional models of plant and animal cells,
eg using small plastic bags filled with cellulose paste to represent cytoplasm, with suitable objects to represent the nucleus (plant cells can also be made if the bags are squeezed into boxes).
- Ask pupils to identify what plant and animal cells have in common and how they are different, and help them relate the models to cells they have observed, and to drawings, diagrams, and photographs of cells. Establish that the diagrams represent a 'view' of the cell from one aspect.
- Provide pupils with secondary sources of information about cells,
eg CD-ROMs which allow virtual reality cell exploration, such as a voyage through a cell. Ask them to produce an account,
eg 'My journey through a cell'. Compare accounts of plant and animal cells to begin to identify differences between them.
- Review the parts of the cells, with pupils identifying that plant and animal cells contain cytoplasm, cell membrane and nucleus, and that plant cells also have a cell wall, almost always a vacuole and often chloroplasts.
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- relate the parts of model cells to diagrams and pictures of plant and animal cells
- describe what plant and animal cells have in common
- identify that plant cells have a cell wall and vacuole and may have chloroplasts, but that animal cells do not
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