The Big Watermelon Experiment:
Physics, Forces and Flying Fruit

Have you ever wondered how many rubber bands it takes to implode a watermelon?

Dr Rob certainly has, and he’s destroyed many melons seeking the answer.

This event culminated during National Science Week 2020, with over 300 schools taking part in one giant (and somewhat messy) science experiment.

Submitting Results

Head to the results page to enter all your results for the experiment.

If you’d like an early copy of the results, the running results as of the 11th of September can be found here! Stay tuned for some interesting visualisations and insights once all of the data is in.

Can schools still take part?

They sure can, at least for now, register using the form below.

This will mean you get any updates from us and don’t miss out on any watermelon madness.

How does it work?

The mini-lessons (videos and pdf downloads) are now available on the resources page. These feature Dr Rob introducing teachers and students to the experiment, including:

  • The practicalities of setting it all up;
  • Science by collaboration;
  • Balanced (and unbalanced) forces at work;
  • How on earth it fits into the real world.

The data will be available for everyone, to marvel at, analyse, or even just help answer the question once and for all!


the immovable object meets the unstoppable force

1 second after this photo, the watermelon would forever change…

Watermelons are tightening their belts

Woolworths bring in the fresh melons

Woolworths supported this event by supplying the first 200 schools registered with gift cards to buy their melons. What a super supermarket.

Dr Karl named as Big Watermelon Experiment Patron

Dr Karl graciously agreed to lend his support and enthusiasm to the mass imploding of watermelons. Hooray for Dr K.

Is this really science?

Yes indeed. It is one big experiment. Each school is essentially doing one (or more) trials in the experiment to gather as much data as possible.

There will be predictions, plans, dependent and independent variables, measurements, even a little maths.

It is a great example of collaborative science, something that happens the world over (usually for more scientifically important reasons).

All the data that is collected will be available to participating schools should they wish to analyse it and search for trends (or just see how their melon compared).

Is all this free?

Yes. All the mini-lessons (video and pdfs) will be made available to participating schools so they can go on the journey to watermelon armageddon together. The only expenses may be materials (watermelon and rubber bands) but we are working on partners for that too.


  • Fun engaging and (yes) educational event to run during National Science Week
  • Great to do with a whole class or year level
  • Free lessons provided (they won’t feel like lessons)
  • Suitable for Primary or Secondary students 
  • Great opportunities for the school to run some science social media and engage their community
  • It is easy to organise and minimal effort/materials required to take part
  • Kids will love it (as will the teachers)
  • Free watermelon leftovers for everyone!


    • Hmmm can’t think of one…

    Register for your school now

    To register your school to participate, just fill out this form. We recommend planning on doing 1 watermelon per class or year group. Ideally sign up once per school, but more is ok too.

    The Big Watermelon Experiment is being run by Dr Rob and Experimentary, because we love science (you’re welcome).

    Do NOT follow this link or you will be banned from the site!