By the end of this section, you will be able to explain how the methods of science are used to make scientific discoveries; define a scientific model and describe examples of physical and mathematical models used in physics; and compare...

Two virtual labs offer practice for creating your own or science project: "How Does Your Garden Grow" and "Critters!" Learn how investigations are conducted from the first step to the finished product.

Given quantitative data students will express and manipulate chemical quantities using scientific notation.

Find out what variables are in a scientific investigation and what the difference is between an independent, dependent, and controlled variable. Look at samples of different types of variables and find out what makes a good variable.

In this interactive activity adapted from NOVA, expand your understanding of the scientific process. Watch two videos featuring animations and interviews with scientists, and notice how the processes unfold and vary from one...

A slideshow tutorial will explain how scientific knowledge can change when new evidence is discovered or new ideas are developed. Take a step back in science history to see some great examples of how scientific knowledge has changed when...

This physics project seems like it should have an easy answer. Instead, it turns out to be a great illustration of why it is important to base scientific conclusions on the outcome of controlled experiments. Things don't always turn out...

The second of a lesson series contains an activity where young scholars choose a lifeboat's variable to investigate, plan an experiment based on the variable they have chosen, and then test the variable. Upon completion of their...

Are you interested in exploring a career in science? Investigate the pay scales of scientists by discipline.

Investigate medical research in producing (culturing) artificial organs, such as livers, on silicon chips. Test how the surface coating of a substrate affects the success of a biofilm.

Understand the scientific practices in this tutorial that defines what science is and isn't.

Given a description or illustration of various models, students will describe how these models represent the natural world and evaluate the advantages and limitations of the models.

Students carry out a scientific investigation of dust in their classroom, then extend their experience to properties of dust in space.

Read about Claude Bernard, one of the first to suggest the use of blind experiments to ensure the objectivity of scientific observations.

Investigate the theory that including desert plants such as mesquite and cactus in a diet can help control obesity and diabetes. Design a scientific experiment that will test this hypothesis, using control variables, observation and...

Investigate scientists' use of models to understand more about an object, concept or relationship. Explore the difference between a healthy eye and an eye affected by macular degeneration by building two models.

Investigate the science of flight, the tilt or angle of attack of a wing's surface and the effect of control surfaces. Construct a model of an open jet wind tunnel using a household desk fan to produce a flow of air.

Investigate breakthroughs in stem cell research, and explore the structure and function of a DNA molecule. Create a model of a DNA from tagboard.

Investigate funnel-web spiders and their ability to adapt in order to survive. Make a set of spider trading cards that will include information about a spider's behavior, habitat and adaptations.

Investigate the use of computers to simulate spider behaviors to learn more about how and why spiders build webs. Build a model of a web to compare your eyesight and dexterity to a spider's, then compare the elasticity and strength of...

Investigate medical uses for otherwise deadly poisons. Experiment with cultured bacteria to explore what it needs to survive and travel.

Discuss facts about Mars and investigate scientists' efforts to create fuel from materials found in space. Perform a simplified method of aqueous electrolysis to split water into its two chemical elements using electric current from a...

Lesson focuses on the Plants in Space experiment which studied how plant roots developed in a weightless environment. Students will conduct three scientific investigations to learn how light, gravity and microgravity affect the growth of...

After developing a hypothesis on how a motor works, students investigate this by building a simple electric motor, using the scientific method as they proceed. Includes handouts and worksheets, as well as a vocabulary list with...