🔬 ScienceGrade 3Lesson 38
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Recycle and Reuse Project

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What you will learn

  • 1Distinguish between renewable and nonrenewable natural resources
  • 2Explain the difference between recycling, reusing, and reducing
  • 3Plan a project that gives a used material a new purpose
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Mini Lesson

Natural resources are materials found in nature that people use to live — such as water, wood, coal, oil, soil, and minerals. Some resources are renewable, meaning they can be replaced naturally. Others are nonrenewable, meaning they take millions of years to form and can run out.

Renewable vs Nonrenewable Resources

  • Renewable: solar energy, wind energy, water (hydro), wood (from replanted forests).
  • Nonrenewable: coal, oil, natural gas, minerals mined from the earth.

The 3 Rs — Best to Last Resort

  1. Reduce — use less of a resource in the first place (best option).
  2. Reuse — use an item again, as it is or for a new purpose, without breaking it down (e.g. refill a water bottle).
  3. Recycle — break down materials to make new products (last resort, still uses energy).

Project Ideas

  • Turn an old bottle into a plant pot (a grown-up cuts the bottle).
  • Make a pencil holder from a clean soup can (ask a grown-up to check it has no sharp edges).
  • Create art from used newspapers or magazines.
  • Build a toy car from cardboard boxes and bottle caps.

Words to know

renewable

a resource that can be replaced by nature within a human lifetime

nonrenewable

a resource that cannot be replaced once used up

conservation

the careful use and protection of natural resources

Renewable vs Nonrenewable ResourcesTwo columns comparing renewable resources on the left and nonrenewable resources on the right.Renewable vs NonrenewableRenewableSolar energyWind energyHydro powerWood (replanted)Soil (restored)can be replacedNonrenewableCoalOil / petroleumNatural gasNuclear fuelMinerals (mined)cannot be replaced
The 3Rs HierarchyA pyramid showing reduce at the top (best), reuse in the middle, and recycle at the bottom (last resort).The 3 Rs HierarchyReduceUse less in the first place (BEST)ReuseUse items more than onceRecycleProcess into new material (last)
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When presenting your project, show the original material, explain what it was used for before, and describe how you gave it a new purpose.

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