Bio Ed Online: How Can We Find Out What Is in Water?

Using paper chromatography, water watchers discover that several substances might be dissolved even though they aren't visible. In this case, you will prepare a mixture of three different food colorings for them to experiment with. A...

One of water's claims to fame is as the universal solvent. Young physical scientists experiment to discover which materials dissolve in this special compound. You could never be more prepared for teaching this activity than by using this...

Ecology candidates culture pond water organisms over a few days time, then they experiment to find out how increasing nutrients affects the population. As part of a unit on water, this exploration gives your class an understanding of how...

Small groups place sand and ice in a covered box, place the box in the sunlight, then observe as evaporation, condensation, and precipitation occur. These models serve as miniature water cycles and demonstrations of the three phases of...

In this activity students will investigate whether several common substances are soluble in water. Student sheets are provided in English and in Spanish.

Some aquifers took thousands of years to collect water, yet they have been depleted in only a hundred years. Viewers learn about where humans use water and the serious concerns for the future of the water supply in the second of 10...

In this lesson students investigate and compare the amount of water in an orange and an apple. Student sheets are provided in English and in Spanish.

We live in the age of Superbugs! These nasty bacteria have developed resistance to antibiotics, and no new antibiotics are being developed. Find out why in a short video that reveals the role profit plays in drug research.

In this lesson learners will create and investigate a simple model of the water cycle. Student sheets are provided in English and in Spanish.

Substances dissolved in water can be present in very tiny amounts that are not visible to the eye. in this lesson students make a solution of food coloring with a concentration of one part per million.