Inquiry Based model- Discrepant events.

What is a Discrepant Event?

• An event that amazes students because it is contrary to what they would expect to happen based on their background knowledge.

• Puzzles the observer.
• Arouses curiosity

1)Orange: Sink or Swim

This experiment is a great way to explain the principle of buoyancy and also to get your kids to voluntarily wash your fruit.

What you'll need:

• Regular orange
• Peeled orange
• Deep bowl or pitcher of water

One of these oranges will sink and one will float. 

Drop each orange into the water separately. While the orange with the peel is certainly heavier, it will float while the peeled orange sinks. This is because the orange rind retains air. The air bubbles give the orange a lower density than the surrounding water, causing it to float. This principle is called buoyancy.