cart Shopping Cart cart(0)

Make a 'beanhouse' greenhouse

You will need:

 
  • 1 PET bottle with lid
  • Compost soil mixture from a nursery or supermarket *
  • 1 packet of bean seeds
  • Clear masking tape
  • Scissors - *make sure you are allowed to use them!
*Compost and potting mix can contain the bacterium that causes Legionnaires' disease.*
Wash hands and take precautions to avoid breathing potting mix dust.
For more information see World Health Organisation
 

Instructions

 
  1. Cut your PET bottle in half.
     
  2. Using compost soil, fill the bottom half of the PET bottle to within 4 cm of the cut edge.
     
  3. Place 4 bean seeds onto the soil surface, at least 2 cm away from the PET bottle sides.
     
  4. Using your finger, poke the bean seeds 2.5 cm into the soil. Water the soil well.
     
  5. Connect the top half of the PET bottle to the bottom half and secure with masking tape.
     
  6. 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!

Alternate version

 
  1. Place paper in the bottom of a re-seal kitchen bag and moisten with water.
     
  2. Put your beans into the bag and seal the bag.
     
  3. Tape the bag against a window and watch the beans sprout over time.

    beans in bag on a window
     
  4. You could also see the effect of adding salt or sugar to the bags or perhaps light vs. dark. Which condition produces the fastest bean growth? It's all about variable testing!
bean sprouts
Photo www.udigal.com

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. 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! 

Join our newsletter for more science teaching thoughts & ideas

Join the Fizzics newsletter

Back to botany experiments

>100 Free Science Experiments on this site!

Coloured shadows
  • Experiments to colour your class!
  • Easy & fun
read more
 
skeleton and student
  • Make fake blood & more!
  • Biology made simple
read more
 
electricity experiments
  • Circuit science for kids
  • Cheap materials found easily
read more
 
Vortex rings made with fog
  • Experiments using Newton's Laws
  • Step by step science
read more

School Science Visits: 

  • Highly engaging & curriculum-linked
  • Additional Teacher Support Resources
  • Professional visits in-class or via video conference
  • Both Primary School & High School science incursions
Call 1300 856 828 or use this form to discuss or make a show booking for your school!

Email updates

Signup to our monthly email Learn more
 

Contact us

1300 856 828
info@fizzicseducation.com.au

PO Box 272
Winston Hills, NSW, 2153, Australia
 
facebookgoogle plustwitter
linkedin youtube   ico6 pinterest