Changing the Earth

Curriculum Links

Subject: Geography
Year Group: Year 4 (Ages 8–9)
Duration: 15 minutes
Class Size: 30 pupils
Key Stage: Key Stage 2
National Curriculum Reference:

• Geographical Processes (KS2 Geography)
  Pupils should be taught to describe and understand key aspects of: physical geography, including: rivers, mountains, volcanoes and earthquakes, and the water cycle.

Learning Objective

By the end of the session, pupils will be able to:

• Identify one or more geographical processes (e.g., erosion, deposition, weathering)
• Understand how these processes can change physical landscapes over time
• Express these changes using simple vocabulary and creative thinking

Success Criteria

• Pupils can use at least one correct term related to geographical processes
• Pupils can explain how a natural process affects a landform
• Pupils show curiosity through participation and reasoning

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Resources Needed

• Sand in trays (3 trays)
• Small water bottles (with squeezy tops)
• Plastic mountain models or small blocks of clay
• Blue fabric or plastic sheeting
• Large laminated image of a UK coastline (e.g. Jurassic Coast)
• Printed “Process Prompt” cards: Erosion, Deposition, Weathering
• Timer or stopwatch
• Whiteboard and marker

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Vocabulary Focus

• Erosion
• Deposition
• Weathering
• Landscape
• River/Coast/Mountain

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Lesson Structure

⏱️ Minute 0–2 – Quick Kick-off

Activity: “Geography Detective”

• Teacher asks: "Have you ever seen a cliff, riverbank or beach? Do you think it always looks the same?"
• Display the laminated image of the Jurassic Coast. Ask: "Can nature change a place like this?"
• Introduce today's mission: “We’re going to be Earth Explorers who find out how the land changes all by itself!”

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⏱️ Minutes 2–6 – Interactive Demo Stations

Activity: ‘Mini Earth in Motion’ (Station Rotation)

• Children split into 3 mixed-ability groups of 10
• Set up 3 stations (rotate quickly, 1 minute each, led by teacher/TA or confident pupils)

Station 1: Erosion Engineering

• Tray filled with sand shaped into a small hill
• Pupils use squeezy bottles to simulate rainfall
• Observe how sand washes away (erosion)
• Ask: “Where did the hill go? What moved it?"

Station 2: Rock Cracker! (Weathering)

• Use small pieces of clay or chocolate bars (with ‘cracks’)
• Pupils simulate freeze-thaw weathering by gently cracking or breaking pieces
• Discuss how this happens on real mountain rocks

Station 3: Build-Up Bonanza! (Deposition)

• Blue fabric as a "river"
• Pupils gently shake wet sand from a bottle into the "river"
• Watch how it settles downstream
• Ask: “Where did the sand end up?”

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⏱️ Minutes 6–10 – Whole-Class Reflection

Activity: Pick a Process

• Pupils return to carpet or desks
• Teacher shows the same coastline image and asks:
  “Can we spot where erosion, weathering or deposition might be happening?”
• Volunteers pick one "Process Prompt Card" and explain what it means in their own words
• Emphasise UK landscapes – e.g., coastal erosion at the white cliffs of Dover, deposition in river estuaries like the Thames

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⏱️ Minutes 10–13 – Creative Challenge

Activity: “If I Were a Rock…”

• Pupils briefly imagine they are a rock on a UK coastline
• Teacher prompts: "How would you feel if the sea crashed against you every day? Would you change? Why?"
• 2–3 pupils share aloud (others can mime or act out being “eroded”!)
• Optional word bank provided on board: crumble, crash, shift, slide, build-up

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⏱️ Minutes 13–15 – Wrap-Up and Quick Quiz

Activity: “Which Process Did It?” Game

• Teacher gives 3 short scenarios. Pupils vote by raising fingers:
  • 1 = Erosion
  • 2 = Deposition
  • 3 = Weathering

Example Question:
"Rain hits the cliff all winter. Bits of rock fall off. What’s happening?"
(Pupils hold up 3 fingers – Weathering!)

Exit Point:

“Your mission today was to become Earth Explorers. What do you now know about the way land changes?”

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Extension Opportunities

• Link to Science (States of Matter – link to freeze-thaw)
• Create a comic strip showing the journey of a pebble
• Explore a local area or online field trip to a UK coast or river

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Differentiation

• Support: Picture-based vocabulary mats for EAL or lower-attaining pupils
• Challenge: Encourage higher-attaining pupils to explain processes using more advanced vocabulary like sediment, abrasion
• SEN: Hands-on tactile elements and simplified group instructions

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Teacher Wow-Factor

This ultra-short yet dynamic lesson turns abstract physical processes into something young learners can see, touch, and feel. By blending mini experiments, imagination, and rapid-thinking games, pupils begin to grasp not only what these processes are, but why they matter – especially in the context of the UK's rich and ever-changing landscapes.

This isn't just geography – it's Earth in action.