Praxis Science Outreach Science Smarts: Float or Sink

The latest Praxis “Science Smarts” column in the Medicine Hat News.

Praxis Science Outreach Science Smarts Column

March 5, 2022

The latest Praxis ‘Science Smarts’ column in the Medicine Hat News (March 5). The article may also be found in the Medicine Hat News at

Float or Sink

I was rearranging things in my office the other day, and I ran across a box of materials that made me a bit nostalgic.
Sometimes teachers invite me into the classroom to do presentations and I wanted to share with you one of my favourite games I play with students – Float or Sink. You will be amazed at the results.

Let’s get started!

Remember to ask an adult before doing this experiment.


  • Old empty aquarium or large clear plastic container
  • Water
  • Sturdy table
  • Area you can make a mess in
  • Can of cola
  • Can of diet cola
  • Orange
  • Peeled orange
  • Paper clips
  • Plasticine balls
  • Tennis ball
  • Ping pong ball
  • Other various materials you want to…

View original post 341 more words

Author: Lochsloidh - McFarlane

Retired science/biology teacher.

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