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Lesson · Grade 3 · Science

Producers, Consumers and Decomposers

  • Grade 3
  • Science
  • 1 min 6 s
  • British Columbia
  • BC3-SC-05

An energy pyramid builds up step by step: the Sun shines on green plants (producers), then a rabbit eats the plants and a fox eats the rabbit (consumers), with a thinner energy arrow at each level up. Beside the pyramid, mushrooms on a dead log and bacteria under a magnifying glass in the soil break down dead things and put nutrients back into the soil, and the video ends by naming the energy pyramid and showing that each level up has less energy.

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In one sentence

The question this lesson answers

Every living thing needs energy to live and grow.

So where does that energy come from?

Transcript

What the lesson says

Every living thing needs energy to live and grow.

So where does that energy come from?

For most living things, energy starts with the Sun.

Green plants use sunlight to make their own food.

That is why plants are called producers.

A rabbit eats plants and gets some of their energy.

A fox eats the rabbit and gets some of its energy.

Animals get their energy by eating, so they are called consumers.

When living things die, decomposers break them down.

Decomposers include fungi, like mushrooms, and tiny bacteria.

They put nutrients back into the soil, which helps plants grow.

This diagram is called an energy pyramid.

Each level up has less energy than the level below it.

Energy from the Sun passes to producers, consumers and decomposers.

Curriculum

Where this fits

British Columbia, Grade 3

Science, Biology: energy is needed for lifeBC3-SC-05

Previous: Populations and Communities in a PondNext: Food Chains and Food Webs

The outcomes and strands follow the British Columbia curriculum.

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