These biology experiments are designed for you to do at home or school using simple equipment. For some experiments, you may need a calculator. Here is a link to an excellent one provided by Web2.0calc.

To access experiments, click on one of the experiments listed below. In most cases, it is simplest to copy the experiment into a word processing program, and then print it out.

Heavy water
Written by: 
Lynne Kelper

This activity explores how the temperature of water affects its density. You will need to gather the following materials: a pencil; a small paper cup; a small-mouthed, clear-glass jar (the cup should be able to sit inside the opening of the jar); three ice cubes; and food coloring.

Hummingbird
Written by: 
Amanda Sibley

These daredevil birds can be perfect subjects for a backyard experiment.

Plankton
Written by: 
Colleen Miks

During this activity you will learn how to create your own food web. You will also analyze the feeding relationships between marine organisms and describe the importance of plankton to the ecosystem.

Germs in the Classroom
Written by: 
Satina Sund, Vanessa Vierkoetter, Esmeralda Manzano and Julie Dunlap

Germs are tiny organisms that can make you feel sick and cause disease. During this activity you will illustrate the steps germs take during transmission. You will learn about the different types of bacteria, how they are spread, and discuss ways to keep from getting sick.

Leaf-cutter Ant
Written by: 
Angelina Alameda

Learn what makes leafcutter ants unique and understand how the different castes of ant work together to provide for the colony.

Manduca Caterpillar Growth Experiment
Written by: 
Dr. Biology

Dr. Biology has teamed up with with the scientists in the laboratory of Jon Harrison and started an experiment to see how different temperatures can change how an animal grows. The Virtual Manduca Growth Experiment lets you see and graph the results. It also has some cool animations.

The Earth's seasons
Written by: 
Abel Torres and Daniel S. Brehony

Have you ever thought about your favorite season, and why it looks and feels the way it does? This activity will help you see and understand why Earth has seasons, and the two things that work together to make seasonal changes happen.

Banana DNA
Written by: 
Melissa Wilson Sayres

Every living thing uses DNA as the instructions for life. But how can we be sure that something so small is actually there at all? Here is one experiment that you can do at home or school that will actually let you see DNA.

Peppered Moth
Written by: 
Megan Rowton, Karla Moeller and Robin Greene

Discuss ideas of natural selection, play a selection-based game, and take a trip through time to see how scientists of the past figured out just how a trait is passed from a parent to its offspring.

Salt Water Ice
Written by: 
Kyle Kinzler

In this experiment, we will look at one major difference between frozen freshwater and frozen saltwater.

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