Unit 6A: Interdependence and adaptation Section 8: Testing soil
Objectives
Children should learn:
to make careful, relevant observations of soils
to draw conclusions from observations and to explain these using scientific knowledge and understanding
Activities
Outcomes
Children:
Present children with two soil samples and ask them to observe them closely eg with hand lenses or microscopes and to record differences between the two soils eg size of pieces of rock, colour, dryness, animal/plant material. Challenge children to explain which could provide a good habitat for a soil-living animal and which would allow plants to anchor themselves most effectively. Remind them of earlier work on soils and drainage. Ask them to present their ideas in drawing and writing.
describe observed differences between the soils
identify characteristics that would suit a soil-living animal eg air spaces, dampness, plant material and explain why these are important
Points to note
It is helpful if children see very different soils eg a sandy soil and a heavier soil.
SAFETY - Select soils from areas without broken glass and unlikely to be contaminated with dog faeces. Wash hands after handling soils.
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SAFETY - Select soils from areas without broken glass and unlikely to be contaminated with dog faeces. Wash hands after handling soils.