While well intentioned, human intervention sometimes has negative effects. Learners explore this and other environmental topics as they respond to four free response exam questions. Topics span from the implementation of bioelectric cars...

Less than nine percent of all AP Environmental Science test takers scored a perfect five on the exam in 2018. Learn from the best answers as well as the common mistakes thanks to the College Board. Four questions from the test covering...

Waste not, want not! Science scholars explore manure as an alternative energy source through reading and experimentation. Groups construct their own biofuel digesters and observe the process of methane production. The teacher's guide...

What happens when fire is less affected by gravity? Observe the behavior of fire in a fantastic freefall experiment! A video from the an engaging physics playlist explains the relationship between a flame's shape, buoyancy force, and...

If most gases are invisible, how do we know so much about them? Pupils practice associating the name, formula, testing method, and outcome for four common gases using an interactive. Users build on the content of their first puzzles to...

What has more energy than a room full of pupils after a fire drill? This lesson plan! Explore the changes in energy during different chemical reactions, discover why some reactions feel cold and others feel hot, and tackle the concept of...

Need to determine the enthalpy change in a system that won't fit in a calorimeter? Hess' Law is here to help! Science scholars discover the practical uses of the law and time-saving hacks to master the calculations.

Pull the trigger on chemical reaction understanding! Curious chemists discover the three basic reaction types using a video from JFR Science. The resource presents each reaction with written and verbal tips and practice problems.

Learn the facts about types of wax! Partnered pupils determine the enthalpy of combustion for traditional paraffin candles, as well as soy-based candles. The activity focuses on calculations and compares the environmental impact of both...

How many ways to you know to start a fire? The video offers instructions for starting a fire without a match, lighter, or magnifying glass. As a resourceful option, it focuses on a method using a sandwich bag, water, and the sun to heat...

How many different types of reactions can you name? After watching the video, your classes should be able to discuss five different types. The lesson explores the similarities and differences between combination, single replacement,...

Investigate the chemistry implemented in cars that keep our air safe. Scholars learn the role of the catalytic converter in changing dangerous gases to harmless byproducts. The video instructor discusses the specific chemical reactions...

Compare the products of complete and incomplete combustion through a video investigation. Scholars compare the products of each process with a chemical analysis. They learn these products have significant environmental consequences.

How does a polar molecule, H2O, compare with a nonpolar molecule, CO2? Young chemists learn the similarities and differences between their covalent bonds and properties. They practice applying prior knowledge in a new way to reinforce...

The United States is the world's largest producer of biofuel. During an in-class investigation, young scientists produce their own biodiesel. They burn a sample of it to determine the heat of combustion. Then they discuss the results...

On Earth, a candle flame points up, but on the International Space Station, it forms a sphere. Young scientists practice their skills by recording observations before, during, and after a candle burns. Chemical and physical changes...

Who knew acid could be so useful? Chemistry allows for the mass production of sulphuric acid to use in products from paints to cleaners to fabrics. The 18th installment in a series of 35 lessons explains the chemistry behind the...

Ever wonder why iron turns to rust? A comprehensive video lesson explains the oxidation reaction that takes place when iron turns to rust. Building from the previous lesson in this 35-part series, the 21st lesson focusses on redox...

How can heat power an engine? Scholars observe a heat engine working and control variables to determine the most efficient setup. They change the amount of heat input as well as the stroke length. Energy efficiency numbers prove the...

Scholars generate and collect pure oxygen through a decomposition reaction of hydrogen peroxide in the fourth instructional activity of an 11-part series. Then, they complete six investigations into the properties of oxygen.   

Excite classes with a STEM project-based learning lesson covering chemical reactions. Groups study the different types through simulations and hands-on activities. They pick one type (synthesis, decomposition, single displacement, double...

When a candle burns down, what happens to the mass that appears to be shrinking? Lesson begins with a demonstration of the chemical reaction of a candle burning. Then scholars use atom models to observe conservation of mass concretely. 

Only 10 percent of an incandescent bulb's energy is used to create light; the remaining 90 percent is heat. In the unit of activities, young chemists examine energy through hands-on activities, videos, discussions, and readings. Scholars...

Did you know horsepower is actually based on the power of a horse? 60 horse power is the equivalent of being pulled by a team of 60 horses! Viewers will learn other interesting facts like this from a presentation that begins with the...