Space and Volume · Summer Term

Volume of Cuboids and Prisms

Students will calculate the volume of cuboids and other prisms using the area of the cross-section.

About This Topic

Biodiversity and extinction examines the variety of life on Earth and the interconnectedness of ecosystems. Students investigate the impact of human activity on biodiversity, including habitat destruction, pollution, and climate change. They also explore the concept of 'keystone species' and the importance of conservation efforts to prevent future extinctions.

This unit fulfills National Curriculum requirements to understand the interdependence of organisms and the impact of environmental change. It encourages critical thinking about sustainability. This topic benefits significantly from structured debates and peer-led research, as it involves complex ethical and economic considerations regarding the natural world.

Active Learning Ideas

Collaborative Problem-Solving: The Food Web Jenga

Build a Jenga tower where each block is a species. Students take turns removing 'extinct' species based on environmental scenarios. They must explain why the whole tower (ecosystem) eventually collapses.

⏱ 30 min·Small Groups

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Formal Debate: Rewilding the UK

Students debate whether apex predators like wolves or lynx should be reintroduced to the British countryside. They must consider the impact on biodiversity, local farming, and public safety.

⏱ 50 min·Whole Class

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Gallery Walk: Conservation Success Stories

Stations feature different endangered species and the specific strategies used to save them (e.g., captive breeding, habitat protection). Groups must evaluate which strategy was most effective and why.

⏱ 40 min·Small Groups

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Watch Out for These Misconceptions

Common Misconception

Extinction is only a modern, human-caused problem.

What to Teach Instead

Students often forget about mass extinctions in the past. Peer-led research into the 'Big Five' mass extinctions helps them distinguish between natural background extinction rates and the current human-driven rate.

Common Misconception

Losing one 'insignificant' insect won't affect humans.

What to Teach Instead

The 'Food Web Jenga' activity is perfect for correcting this. It shows that even small organisms provide vital 'ecosystem services' like pollination or soil aeration that humans rely on.

Frequently Asked Questions

Why is biodiversity important?

Biodiversity ensures ecosystem stability. It provides humans with essential resources like food, medicine, and clean water, and helps ecosystems recover from disasters. A diverse ecosystem is more resilient to change.

What are the main causes of extinction today?

The primary causes are habitat loss (due to farming and urban sprawl), climate change, pollution, overexploitation (like overfishing), and the introduction of invasive species.

What is a keystone species?

A keystone species is an organism that has a disproportionately large effect on its natural environment relative to its abundance. If they are removed, the entire ecosystem can change drastically or collapse.

How can active learning help students understand biodiversity?

Active learning strategies like ecosystem modeling or rewilding debates move students from passive concern to active analysis. By simulating the collapse of a food web, they gain a visceral understanding of interdependence that a textbook diagram cannot provide.

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