Substances can move within and between Earth’s atmosphere, hydrosphere, geosphere and biosphere as part of large-scale Earth systems.

"Earth chemistry" is one of 15 big ideas of science in the Best Evidence Science Teaching collection. Understanding of the big idea is built up by a series of key concepts at age 11-16, which have been organised into teaching topics.

The research-informed resources for each key concept make up a progression toolkit that provides:

  • appropriately-sequenced steps for learning progression

  • diagnostic questions to reveal preconceptions and common misunderstandings

  • response activities to challenge misunderstandings and encourage conceptual development

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Air pollution

Water cycle

This Best Evidence Science Teaching topic looks at the key concept of the water cycle. The resource includes diagnostic questions and response activities support students in being able to:

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Acids and Alkalis

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