Show your class how people calculated complex math problems in the old days. Scholars take a trip back to the days without calculators in the 15th installment of a 35-part module. They use logarithms to determine products of numbers and...

Discover the properties of water-loving and water-hating surfaces. In the seventh installment of a nine-part series, scholars explore hydrophilic and hydrophobic surfaces by conducting an experiment. They observe surface coatings,...

Discover and demonstrate the Lotus Effect and superhydrophobic surfaces with the eighth installment of a nine-part series that teaches scholars about surfaces that exhibit superhydrophobicity. The lesson continues also describes...

Radioactive pollutants can enter the body through ingestion, inhalation, absorption, or injection. The last lesson in a series of 36 introduces pupils to radioactive pollution. They study its sources, both natural and man-made, its...

Investigate invisible forces. Young engineers design a setup that changes the direction of a steel ball using a magnetic force. The purpose of the setup is to model the gravitational pull of spacecraft by planetary bodies.

Purifying air and water, providing soil in which to grow crops, and moving water through its natural cycle are all services an ecosystem provides that benefit humans. Lesson four in a series lets learners explore and discuss the value of...

Ecosystems provide many things humans not only use but also need in order to survive. The last lesson in the series of seven introduces scholars to the idea of ecosystem services, that ecosystems provide humans with many things we need....

Show the class the world as they've never seen it before—from way above! Learners try to unravel the mysteries presented by rich satellite imagery, learn to interpret topographic maps, and study erosion by constructing their very...

Don't waste any more energy trying to find a great resource on energy. The third installment of a 25-part Energy Systems and Solutions unit focuses on energy use in pupils' lives. They consider how their daily routines consume energy and...

How does temperature affect lipase activity? Young scholars conduct an experiment to collect data on the interaction of lipase at different temperatures. They add lipase to a solution of milk, sodium carbonate, and phenolphthalein and...

Sensor technology is amazingly accurate and useful. Combining the sensor technology and mathematical knowledge, scholars design experiments to answer a question they have developed. Questions may focus on light sensing, temperature...

Electromagnets come in both large and small scales—from big machinery in scrap yards to hard disk drives. Here's a resource that provides directions for building a variable electromagnet on a stand. Scholars then experiment with the...

Class members build a machine to demonstrate Lenz's law and help this scientific principle come to life. After building a ring fling machine, instructions for properly operating the machine and a few thought-provoking questions lead to...

Climate change affects even the largest and intimidating of landforms—even Mount Everest! A resource helps teach learners the connection between global climate change and its effects on Earth. Activities include videos, class discussion,...

Where do those asymptotes come from? Learners graph, simplify, and solve rational functions in the fifth module of a 10-part series. Beginning with graphing, pupils determine the key characteristics of the graphs including an in-depth...

If all the mined gold in the world was melted across a football field, it would rise 5.4 feet. That's just one interesting fact pupils learn when using the debate topics website to determine if the United States should return to a gold...

Diagrams with annotations are shown on each of these eighteen slides, which summarize the processes of respiration. The focus is on the 3-step oxidation process and the Krebs cycle.  Students should be able to follow these slides...

All aspects of the photosynthesis process, and the way that plants have adapted with specializations are detailed here.  The diagrams and info-graphics will be useful to your AP biology class. It could also be used as a review...

In this fraction division worksheet, students read information about dividing, using pizzas divided among fraternity houses as models, completing simple related problems. 

In this fractions activity, learners put fractions into their simplest form, write as improper fractions, add and subtract, estimate amounts, and more. They complete 31 problems.

For this metabolism test review, students define several terms. Students write balanced chemical equations for aerobic cellular respiration. Students complete several multiple choice questions.

Sixth graders practice Least Common Multiple in fractions. In this fraction lesson plan, 6th graders look at two different fractions and find a common denominator. They sing a song to memorize mean, median, and mode. 

Both a reference sheet and skills practice worksheet, this handout on common fraction rules reviews steps for adding, subtracting, multiplying, and dividing fractions. Twenty examples are provided to demonstrate these skills, and...

Emerging ecologists examine endangered species by visiting the US Environmental Protection Agency website. They consider human contribution to the decline of different species. They research an endangered animal and then craft a poster...