Teacher Demonstration: Liver Enzyme Action

This demonstration illustrates the importance of enzymes in the human body. Enzymes catalyze many important chemical reactions in the body. This demonstration is a visual example of how the enzyme catalase, which is present in all cells, but in highest concentrations...

Teacher Demo: Greenhouse Effect

This demo demonstrates the greenhouse effect by comparing the air temperature of a room with the air temperature inside a clear plastic bag containing black construction paper. The bag models the Earth’s atmosphere and the black construction paper models...

Student Activity: Plant Tropisms Part 1

This student activity illustrates how plants grow away from/towards a stimulus by continuing cell growth and elongation on one side of the stem while ceasing cell growth and elongation on the opposite side of the stem. This connects to the curriculum by allowing...

Teacher Demo: Convection

This demo models how convection occurs in the atmosphere and hydrosphere by showing what happens at the interface of a hot fluid and a cold fluid. This simulates what happens when cold and hot air masses meet, as well as why/how the ocean regulates climate.
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