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Make a 'beanhouse' science experiment : Fizzics Education

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Make a ‘beanhouse’

Make a ‘beanhouse’

Follow FizzicsEd 150 Science Experiments:

You will need:

  • One PET bottle with lid
  • Compost soil mixture from a nursery or supermarket *
  • One packet of bean seeds
  • Clear masking tape
  • Scissors – make sure you are allowed to use them!
  • Optional – Box cutter (adults only)

*Compost and potting mix can contain the bacterium that causes Legionnaires’ disease.* Wash hands and take precautions to avoid breathing potting mix dust.

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Make a beanhouse science experiment version 1 - materials needed
1 Cutting a PET bottle with scissors

Cut your PET bottle in half. You may need to make a small hole using a box cutter (away from children) or alternatively pinch the side of the bottle and you should be able to make the initial cut.

2 Bottle filled with soil after its been cut

Using compost soil, fill the bottom half of the PET bottle to within 4 cm of the cut edge.

3 4 bean seeds in the soils

Place 4 bean seeds onto the soil surface, at least 2 cm away from the PET bottle sides.

4 Bean seeds being pushed into the soil

Using your finger, poke the bean seeds 2.5 cm into the soil. Water the soil well.

5 Top half of the PET bottle being reconnected

Connect the top half of the PET bottle to the bottom half and secure with masking tape.

6 Bottle being set up outside a window with the lid left loose

Leave the lid loose and place the bottle on a window ledge that receives good sunlight.

7

Your plants should begin to sprout within 2 weeks!

8 A man looking a large flower model

Get the Unit of Work on Plant Biology here!

  • Learn about the parts of a flower
  • Discover how vascular tissue transports water & sugars around the plant
  • Learn about plant pigments and adaptations to the environment
  • From photosynthesis to transpiration & more, there’s a heap covered!

Includes cross-curricular teaching ideas, student quizzes, a sample marking rubric, scope & sequences & more

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9
10 Teacher showing how to do an experiment outside to a group of kids.

Online courses for teachers & parents

– Help students learn how science really works

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Why Does This Happen

Growing your own beans in a PET bottle can be a lot of fun, but you can also use these beans to investigate factors that affect plant growth.

Variables to test

  • Beans favour a combination of growing conditions that you can experiment with. Try changing the amount of heat, light or nutrients or the growing media that the seeds ar in.
  • Try setting up different bottles and changing one thing to see the effect (eg. the amount of water or light they get or adding salt to the soil). Changing one variable and seeing the result is part of the scientific method and we strongly encourage it!

A man with a glove above a liquid nitrogen vapour cloud

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