Microorganism Multiplication

If you have taught the first lesson in this mini unit, learners already know that cabbage juice and vinegar cause chemical changes in some materials. Now, they get a chance to use them to compare the liquids' reactions to five known and...

Can microorganisms live in the dry, cold climate of Antarctica? Young scientists view a research project measuring microorganisms in the Taylor Glacier. They record the findings from dirty ice, clean ice, boots, sediment, and more. Then...

Why do experiments require a control? Guide scholars through designing an experiment to see what they can do to evaporate water faster with a lesson that stresses the importance of controlling all variables. The second activity...

Ice is nice, and its condition on the planet has a significant effect. Junior geoscientists experiment with ice melting in both water and on land to discover how each affect the rising sea level. This detailed lesson outline even...

In this colorful animation, our current problem with climate change is likened to a block-stacking game of Tetris. Greenhouse gases are increasing in the atmosphere at an increasing rate. Can we place them properly before it's too late?...

Want to add a wow factor to your current chemical changes lesson plan? Try a microscale experiment with colorful precipitates! Partnered learners conduct 10 single displacement reactions and record their observations.

Is there more to evaporation than just less liquid? Show young scientists the energy transformation that occurs during a phase change through a series of simple experiments. Lab partners place drops of water, ethanol, and ethoxyethane on...

Leaves fall off the tree in the autumn, but why do they change colors? The interactive covers the role of chlorophyll and photosynthesis. It also explains both carotenoids and anthocyanins.

If air gets cold, does it turn into ice? Watch Joanne and Steve as they experiment with liquid nitrogen and a balloon full of air. What happens to the air is really quite remarkable! Explain this phenomenon in depth with your class after...

Climate change is in the news more than ever these days, and it will increasingly continue to be a hot topic in the future. Watch a video that proposes different ways people can begin to think about climate change in order to...