Scholars find Earth won't support humans much longer and need to identify a planet with water to inhabit. They test four unknown samples and determine which is the closest to water. Then they explain and defend their results.

Do not let the class just sit and rot. Pupils learn how decomposition and nutrient recycling is important to an ecosystem. Groups design an experiment to determine how environmental conditions affect decomposition. They develop a poster...

Much like the tale of Humpty Dumpty, proteins, once altered, will never be the same again. Honors and pre-AP biology classes explore the delicate world of enzymes via a Webquest and lab experiment. The teacher's guide contains all...

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

Are you looking for a shockingly good lesson? Check out one that has middle schoolers recreate four of Benjamin Franklin's experiments. Groups investigate, observe, and draw conclusions about static electricity and electrical current....

Scholars collect data from heating sand and water before forming testable hypotheses about why sand heats up faster. Afterward, they develop and run experiments to test their hypotheses.

How does water activity play a role in food spoilage? First, the learners think about which types of foods would be best to take on a backpacking trip based on the water activity of different foods. It then walks through why water...

Food storage matters! Scholars learn how the amount of water in corn can affect its rate of spoilage. They create a control group, then test three corn samples stored in three different locations for water activity. As a result of the...

What are the different ways to test for pH? First, scholars explore the pH scale and a common way to test for acidity and alkalinity. Then, they learn about the importance of pH in food safety and why variance in pH could potentially...

Teach the class how to use a microscope to identify bacteria in food. Scholars explore the different parts of the microscope and learn how to determine total magnification. They walk step-by-step through the procedure of preparing slides...

Scholars use a lab simulation to test contaminated yogurt for bacteria by gram staining. They learn proper lab procedures for handling bacteria and for sterilizing equipment, and then walk through the process on their own to try gram...

Scholars explore the procedure for bacteria sampling in a virtual lab by first walking through a detailed step-by-step procedure of preparing the samples of raw milk and pasteurized milk, growing the bacteria, and comparing results....

Learners complete a virtual lab to test for a corn mold that can lead to dangerous toxins. They walk through a detailed step-by-step procedure then see their findings. Throughout the activity, they learn how to use lab tools and practice...

Extracting DNA is probably easier than pupils think! A quick video demonstrates one method of extracting an individual's DNA. The presentation shows each step of the process as well as the results.

Break down the scientific method to get a better grasp on the proper way to use it. A short presentation walks through each step in the scientific method and the proper vocabulary associated with each. Scholars complete the worksheet to...

There is growing evidence that suggests the results of many studies are not reproducible. The 31st lesson of the Crash Course Statistics playlist discusses possible causes of the problem and identifies solutions since producibility is...

It's time to mix things up! Introduce biology scholars to the latest topic in marine research—invertebrates! The third installment in a five-part series of Invertebrates lessons explains the hypothesis that tiny, migrating shrimp are...

How do we know what we know? Examine the asker of this, and many other questions, during the 14th installment in a 15-part History of Science video series. The narrator explains the important contributions made by Galileo, Bacon, and...