Students test for the presence of enzymes in fruit and the specificity of those enzymes. They identify the susceptibility of enzymes to certain environmental factors such as temperature and pH in the enzymes environment.

Students are introduced to the basic principles of atmospheric pressure. After watching demonstrations, they discover the capability of air pressure and how it affects weather. In groups, they use an inquiry template to solve different...

Students define thermal equilibrium. They distinguish between internal energy and heat. Students describe how the quantity of heat that enters or leaves a substance is measured.

In this chemical reactions worksheet, students review the solubility rules for common salts. Students determine the molecular equation, ionic equation, and net ionic equation for specific reactions. Students calculate moles and volume...

Eighth graders demonstrate how scientific principles can be used to provide resources in an emergency situation.  In this evaporation lesson students view a demonstration on a solar still and see a brief PowerPoint presentation. 

Students research chemical formulas and balance chemical equations.  In this chemical equations lesson plan students complete a class activity on chemical equations and answer questions.

Young scholars explain how DNA directs the production of proteins.

Students, after discussing oil pollution, generate solutions to an oil spill.

Students view a video that presents the biogeochemical cycle of nitrogen. They compare types of soils and consider how different fertilizers affect soil composition.

Students explore the breakdown of proteins. They cut wells in Jell-O and observe as the detergent digests the Jell-O. Students record their observations and take measurements.

Students discuss anaerobic respiration and how it relates to sprinting. After discussion of related processes, students create a brochure that explains the complex processes behind every muscular interaction.

In this refraction instructional activity, students will explore the property of light called refraction. Students will conduct a quick experiment to understand how light is refracted. Then students will complete 2 short answer questions.

In this ethyl alcohol activity, students read about the characteristics of ethanol including the effects it has on the body when ingested and digested. This activity has 2 short answer questions.

In this cell fluid balance learning exercise, students read about how fluids are transported in and out of a cell through the cellular membrane. Students compare cells that are isotonic, hypertonic, and hypotonic. This learning exercise...

In this stoichiometry worksheet, students identify types of reactions, show the products, and balance the equations. Students determine the limiting reagent, theoretical yield, and percent yield for given reactions. This worksheet has 5...

Students study the concepts of "variety" and "relative abundance" as they relate to biological diversity.  For this life science lesson students calculate numbers that describe the biological diversity in certain communities. 

In this rate, ratio, and proportion instructional activity, 7th graders solve ten multiple-choice problems.  The solutions are provided by clicking on the "show answers" on the bottom of the page.

Learners define terms and describe where they are found and formed.  In this methane lesson students complete an activity and describe ways in which methane hydrates impact our lives. 

High schoolers explain the process of wave formation and analyze the relationship between the ocean and the atmosphere.  In this oceans lesson students use buoys to cast real time sea state conditions. 

Students examine how and when rust and corrosion occur.  For this corrosion lesson students complete an experiment to see why metals rust. 

Students watch and predict chemical reactions when different substances are mixed together. They differentiate between solid, liquid, and gas.

Tenth graders explore DNA using online tutorial. They perform their own DNA extraction from a clove of garlic and identify the key components of DNA.

Students' temperature is measured using an instrument called a thermometer.

Fourth graders, in groups, examine the effect of heat on bonding forces by doing laboratory work.