This demonstration shows that the combination of yeast, sugar and water will produce a gas that can be collected. This provides students with an opportunity to draw on prior knowledge to identify the cellular process involved. Students also have a chance to predict the gas produced and determine a way to test their prediction.
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Teacher Demo: Crushed Can - The Power of Atmospheric Pressure
Categories: Teacher Demonstration
This is a classic demonstration that illustrates the power of atmospheric pressure. A small amount of water is heated in a pop can. The can is inverted and submerged in ice-cold water. As a result,... read more
Teacher Demo: Water Quality Investigation
Categories: Teacher Demonstration
This demonstration shows some differences between potable (drinkable) water and non-potable (non-drinkable) water. Variations in temperature, turbidity and pH level also determine the types of... read more
Teacher Demo: Bending Light - Part II
Categories: Teacher Demonstration
In this demonstration, laser light is bent as it travels through a sugar (or salt) solution of varying concentrations. read more
