What is a hook? It’s an interesting starter to ‘hook’ a kid’s attention. Often hooks are discrepant events. Right now, discrepant events are sold as part of inquiry science. But, teachers have used ‘hooks’ forever. It’s just a great way to teach. They elevate any topic. For example, I use Density Bottle to introduce density, as a concept. I ask my kids to explain what is happening. Now we can tackle the topic—usually with a lab.
For optics or optical illusions, I use The Disappearing Beaker.
For a gas law introduction, I use Can Crush.
Another great discrepant event is a Cartesian Diver. My favorite version is here. Have the kids explain why it sinks.
It helps to have a list of discrepant events to use. Invitations to Inquiry has 486 pages with loads and loads of ideas.
Here are a few great ideas for Chemistry: Discrepant Balloons, Vanishing Volume, and several at Teaching Chemistry as an Experimental Science.
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