In this demonstration, a peeled potato is cut into the form of a candle and an almond slice is used as the candle’s “wick.” The teacher lights the almond slice on fire and it burns. The students see the object, and make observations about it. Then the teacher blows the flame out and allows the students to get a closer look at the “candle.” This demo is an excellent way of explaining the difference between “observations” and “inferences.”
Related Resources:
Teacher Demo: Banana DNA Isolation
Categories: Teacher Demonstration
This demonstration results in the isolation of DNA from banana. It is very useful for students to see DNA to bring some sense of physical reality to what can be a very abstract topic. read more
Teacher Demo/Student Activity: Gas tests
Categories: Lab/Student Activity, Teacher Demonstration
This demonstration/activity involves the safe production of oxygen, hydrogen, and carbon dioxide gases, as well as the appropriate results for tests used to identify these gases. read more
Teacher Demo/Student Activity: There's Iron in your Cereal?
Categories: Lab/Student Activity, Teacher Demonstration
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