🔬 ScienceLevel 1Lesson 38
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Protecting the Environment

Lesson preview: the Mini Lesson and Vocabulary are open to everyone. Guided practice, exercises, the parent checklist and the printable PDF worksheet come with full access (free 7-day trial or membership).

Learning Objectives

  • 1Explain how pollution and litter harm living things and habitats
  • 2Name the three Rs — reduce, reuse, and recycle
  • 3Describe at least three actions to help protect the environment
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Mini Lesson

The Earth is home to millions of living things — plants, animals, and people. All of them depend on clean land, water, and air to survive. But human actions can damage these environments, and it is up to all of us to protect them.

How humans harm the environment

  • Litter — dropping trash outside harms animals that eat it or get tangled in it, and pollutes soil and water.
  • Air pollution — smoke from cars and factories makes the air dirty and can harm the lungs of animals and people.
  • Water pollution — chemicals and plastic dumped in rivers and oceans kill fish and other water creatures.
  • Habitat loss — cutting down forests and building on wild land destroys the homes of animals and plants.
  • Example: A plastic bag thrown in the ocean looks like a jellyfish to a sea turtle — and can kill it.

The three Rs

  • Reduce — use less in the first place. Turn off lights. Use less water. Buy fewer things you do not need.
  • Reuse — use things again instead of throwing them away. Bring a reusable water bottle. Upcycle materials.
  • Recycle — sort your waste so glass, paper, plastic, and metal can be processed into new materials.

What children can do right now

  • Pick up litter and put it in the correct bin.
  • Turn off taps and lights when not in use.
  • Use both sides of paper before recycling it.
  • Plant a seed or care for a plant or garden.
  • Walk or cycle instead of always going by car.
Four simple actions that help the environmentA 2x2 grid showing four simple actions — save water, recycle, plant trees, and turn off lights — each with a small illustration and a label.Four Ways You Can HelpSavewaterturn tap offRecycleglass · paperplastic · metalPlanttreescleaner airTurn offlightssave energy
Four small daily actions — together they protect the planet.
Earth, polluted side and clean sideA split Earth — the left half is gray with litter and smoke showing pollution; the right half is green with trees and blue clean water.Polluted Earth vs Clean Earthpollutedclean
Our choices decide which Earth we live on.
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Ask yourself: "What is one thing I can do today to help the planet?"

Vocabulary
Environment
The world around us — land, water, air, and living thingse.g. We must protect our environment.
Pollution
Dirty waste that harms air, water, or lande.g. Smoke is air pollution.
Habitat loss
When animals lose their homes because places are destroyede.g. Cutting trees causes habitat loss.
Reduce
To use less of somethinge.g. I reduce paper by using both sides.
Reuse
To use something again instead of throwing it awaye.g. I reuse my lunch box every day.
Recycle
To turn used items into new thingse.g. We recycle plastic bottles.
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