This comprehensive unit on linear and exponential functions provides numerous clearly-written worksheets. Topics include graphing linear equations, solving systems of equations algebraically and by graphing, identifying the domain and...

When it comes to rating educational calculators, this calculator is always near the top of this list. Now it's available as an app. There is a lot of calculator power wrapped up in this app. Not only is this a fully functioning...

Your class will agree that this is the best way to demonstrate the greenhouse effect: making solar s'mores! Using a clear plastic cups as mini atmospheres, lab groups compare how adding different materials affects the melting rate of...

Lub-dub, lub-dub. Why does the heart beat? Why does blood circulate throughout the body? Life scientists find out how important circulation is for dissolving and dispersing materials by timing how long it takes for food coloring spread...

Where is HIV/AIDS most prevalent and what are the current trends regarding HIV? Have groups work together to map the world's HIV/AIDS rates, then create a class map with all the data. Lesson includes cross-disciplinary concepts including...

Clever! In order to compare indoor and outdoor dispersal rates for the movement of gases and particles through air, collaborators will participate in a classroom experiment. Set up a circular grid and set students on lines that are...

Scholars build a simple filtration system to remove impurities from muddy water and rate the filtered water to a grade of clarity scale. The focus is on teamwork and problem solving. This instructional activity would be effective in your...

Dare your class to drive dissolved carbon dioxide out of carbonated liquid at different temperatures to discover if there is a difference in rate. To make this experiment more sound, have explorers use equally measured amounts of soda...

We take a steady shower stream and clean drinking water for granted, but in many countries around the world, the lack of water or a clean water supply is responsible for higher sickness and death rates. Taking a closer look at the water...

How can you effectively provide detailed concepts of water properties to your high school class in a way they find exciting and challenging at the same time? By letting them play, of course! Through a variety of...

Most drugs used today come from nature, so the discovery of new ecosystems in the deep sea is exciting from a medical perspective. Scholars develop their own bioassay to test germination rates in seeds. 

Uranium 235 has a half-life of over 700 million years and is the fuel used in the atomic bomb dropped on Hiroshima, Japan. Pupils see the half-lives and decay rates of Carbon-14 and Uranium-238. They also take measurements of these two...

Based on the rate of melting observed from 2003-2007 in Greenland, it would take less than 10 minutes to fill the Dallas Cowboys' Stadium. The 17th lesson plan in a series of 21 has scholars use the ICESat data to understand the ice mass...

Freedom of the press was seen as a right so important that the Founding Fathers listed it as part of the first amendment to the United States Constitution. Americans pride themselves on this freedom, but just how free are American...

Many people think they can't observe plate tectonics, but thanks to GPS, we know that Australia moves at a rate of 2.7 inches per year, North America at 1 inches per year, and the Pacific plate at more than 3 inches per year! Scholars...

Get the best ratio for a good date. The class watches a video where dates are rated based on the ratio of words spoken. Pupils then use the ratios in the video along with other given ratios to find equivalent ratios. Finally, they...

It seems like it should be about three. Pupils learn to get an estimate of the derivative of a function at a point by using the derivative functionality of their graphing calculators. They take that information to determine the equation...

Bass drum, snare drum, tom-toms, cymbals. Perched behind their drum sets, wielding their drum sticks and wire brushes, drummers lay the grove and are the heartbeat of a band's performance. A dynamic lesson introduces young musicians to...

Third graders develop their reading superpowers in a lesson plan on fluency. After first listening to an audio recording or teacher read aloud, the class works together identifying criteria for fluent reading, focusing on phrasing, rate,...

Young readers continue to strengthen their fluency skills with a text of their choosing. The teacher first engages the class with an audio recording or read-aloud of a short poem, modeling for children how to read fluently. Next it's...

What stories do current trends tell about society, fashion, and the future? Scholars investigate the concept of inflation and its impact on the future of the American economy. They compile current economic data to determine the level of...

Modeling population growth gives learners an opportunity to experiment with real data. Comparing the growth rates in this real-life task strengthens learners' understanding that exponential functions change by equal factors over equal...

Determine the slope when the unit rate is difficult to see. The 17th part of a 33-part series presents a situation that calls for a method to calculate the slope for any two points. It provides examples when the slope is hard to...

Explore how to graph lines from different pieces of information. Scholars learn to graph linear functions when given an equation, given two points that satisfy the function, and when given the initial value and rate of change. They solve...