Having a clean, reliable source of drinking water is essential for any community, but in many cases this is easier said than done. Engage young environmentalists in exploring the five factors affecting vulnerability of a groundwater...

Introduce future doctors to medical terminology and phrases associated with the skeletal and muscular systems. As they work through a series of worksheets and exercises, high schoolers apply their knowledge of the bones of the...

Building off young chemists' knowledge of the states of matter, kinetic molecular theory is the focus of the unit. Eight days of lessons including multiple demonstrations, one lab experiment, directed instruction, and worksheets,...

How is the wind up there? The class builds a topography model using materials available in the classroom, then place wind flags in different locations on the landscape. Using a fan as a wind source, pupils collect data about how wind...

Change the density of water by adding minerals. The presentation discusses density—from the definition to calculations—and applies it to the real world. It briefly mentions specific gravity, and finishes by showing Archimedes'...

Cubic crystals can have 6, 8, and even 12 sides. Here is a presentation that shows pupils three different kinds of cubic crystalline structures: cubic, body-centered, and face-centered. These structures are then applied to three...

Substances with the same empirical and molecular formula must be differentiated by their structural formula. Part two in a series of 36 has pupils using chemical formulas to calculate how much of a compound is present in a given...

Classes explore colloids through readings and questions in lesson 10 in a series of 36. They learn everything from methods of preparation and properties to how to classify colloids. They finish the lesson by seeing how to apply...

Friction leads to movement, heat, and melting on such a small scale most people don't notice. A short simulation permits scholars to observe the reaction between atoms as they move together.  The simulation applies the concept of...

Explore how our chromosomes work to define human attributes. A complete unit presentation includes topics such as genetic disorders, blood typing, and Punnet squares. Learners answer questions throughout the presentation to apply the...

If you are at a sports match and the crowd starts two waves that are both headed toward you at the same time, what do you do? The simulation applies the concepts of constructive interference and destructive interference to that very...

When a car crashes into a wall, does it just stop or does it bounce or roll backwards? A simulation relates velocity, kinetic energy, momentum, and restitution to answer this question. Scholars apply their knowledge through...

Does Newton's First Law of Motion explain how to move a sled across ice? A simulation encourages scholars to decide if they should push, pull, or apply no force. Their decision moves a sled across the ice and to the home at the...

To show the magnitude and direction of all forces acting upon an object, scientists use a free body diagram. This simulation serves as an introduction to free body diagrams allowing scholars to build their own. Pupils select the proper...

Keep calm and use the force! Joey pulls a cart and scholars adjust the force required to control the movement. Through simulating different scenarios, participants learn about Newton's Third Law. It includes analysis questions throughout...

Have you ever tried following confusing or incomplete directions? In a hands-on experiment, partners give and follow directions to build a structure. Scholars apply their years of experience taking instructions to prove they know...

Does practice make perfect or just improvement? Scholars practice drawing a triangle on an Etch-A-Sketch. They learn about the part of the brain that controls sensory-motor integration and apply that to an analysis question.

How exactly does touch help us identify items? Learners test this question by feeling a coin without moving their fingers and trying to determine if it is heads or tails. They test their accuracy by rubbing their...

Which intermolecular force is the strongest? Scholars test the relative strength of London dispersion forces, dipole-dipole interactions, and induced dipoles using a simulator. The interactive allows learners to pull on paired molecules...

Young chemists love it when colorful solid products appear in a reaction vessel! Scholars discover the products that form during halide ion tests through a hands-on activity. Users go online and apply chemistry knowledge and reasoning...

Amphoteric compounds act as both an acid and a base. Scholars apply their knowledge of the four oxide types while completing four puzzles. They match a sample of each type of oxide with the corresponding reaction.

Two men want drinks and the first orders H2O. The second man orders H2O too, but he dies. Scholars apply their knowledge of H2O2 and other everyday chemicals during the activity. They match chemical formulas to common chemical names in a...

It is best to avoid jokes about noble gases; they get no reaction. Scholars match the noble gases to their symbols and uses. Then they solve three gridlock puzzles reviewing the material while applying some simple logic.

Propanol is a common alcohol used in hand sanitizers. The many forms and uses of alcohols fill an intriguing lesson. Scholars apply logic to match alcohols, chemical structural formulas, oxidation products, and more in a series of puzzles.