Porosity And Permeability

Demonstrate how ice floats on water and get the class thinking about why icebergs are so deceiving. Investigators then experiment with mixing water of the same temperature and water of different temperatures. Make sure to explain the...

You've heard of it raining cats and dogs ... but what about fish and frogs? It turns out, one scenario is much more likely than the other! Intrepid weather investigators examine the curious behavior of waterspouts using a leaf blower,...

How does food coloring work? Classes watch a demonstration showing liquids dissolving in liquids. In groups, they then explore the ability of other liquids to dissolve in water (alcohol, mineral oil, and corn syrup) by setting up and...

Open this lesson by reading together about primary and secondary batteries (such as nickel-cadmium cells), problems they can cause in the environment, and how humans can minimize the damage. Afterward, little ones examine a collection of...

Spread the message of recycling while teaching your English language learners new vocabulary and practicing verb tenses. Included here are four lesson plans for each level (beginning, intermediate, and advanced) as well as accompanying...

How do we predict future population growth? Young researchers investigate various factors affecting the size of our population. As they calculate and interpret graphs to determine factors that could potentially affect increases...

Dare your class to drive dissolved carbon dioxide out of carbonated liquid at different temperatures to discover if there is a difference in rate. To make this experiment more sound, have explorers use equally measured amounts of soda...

Different substances can have different densities, but can the same substance have different densities? Lesson explores the effect of temperature on the density of water. Extension idea connects the concept of how melting ice in lakes...

Will human existence define an epoch? Many scientists think we are in a new epoch, the anthropocene, defined by humans and our impact on the environment. An online interactive demonstrates the immense impact humans have had on every part...

If renewable energy sources are the best option, why aren't they used on a global scale? Junior environmentalists explore the benefits and problems associated with energy sources such as solar, wind, and biomass with a short video and...