Pupils experiment with the LaMotte Winkler-Titration Test Kit to try to answer the question of what is dissolved oxygen. They explore all the possible ways to test for dissolved oxygen and brainstorm all the obstacles that can affect...

In this active transport instructional activity, students review the cellular process of active transport including the structures and functions of the cell organelles involved. This instructional activity has 28 fill in the blank...

In this math vocabulary worksheet, students read a set of 15 math related definitions and write the words being defined. A reference web site is included for additional activities. 

Students design objects in the Museum of Modern Art's collection of simple machines. In this simple machines instructional activity, students explore the machine age in the MoMA's design collection. Students identify simple machines and...

Students use maps and mathematics to determine the appropriate panther population in a given area. In this Florida ecology instructional activity, students research the area requirements of male and female panther and use a map to help...

Students explain how wetlands minimize the impact of hurricanes. In this earth science lesson, students investigate how different materials affect the steam plume path. They complete their worksheet after the lab.

In this brain teaser worksheet, students solve 1 problem, then click on a button to check their answer. A website reference is given for additional activities. 

In this brain teaser worksheet, students solve one brain teaser word problems. A website reference is given for additional activities. 

Students identify the different types of milk available in the market. In this adult health science lesson, students compare their nutrition information. They read milk labels and analyze the nutrients in it.

For this English worksheet, students read "New Machine Sucks CO2 from the Air," and then respond to 1 essay, 47 fill in the blank, 7 short answer, 20 matching, and 8 true or false questions about the selection.

In this English worksheet, students read "International Car Free Day," and then respond to 47 fill in the blank, 7 short answer, 20 matching, and 8 true or false questions about the selection.

Scientists have recently found that mealworms may be able to break down and degrade styrofoam, a form of plastic previously thought not to be biodegradable. Read how this discovery may affect pollution.

Learn what it means to reduce a rational expression to lowest terms, and how it's done!

[Free Registration/Login may be required to access all resource tools.] In this lesson students find and reduce ratios. Students examine guided notes, review guided practice, watch instructional videos and attempt practice problems.

This resource offers an overview of fractions from several aspects, including simplifying, reduced, mixed numbers and improper form, and basic operations. Examples and diagrams are included to help demonstrate each topic.

Find a quick, concise explanation of how to find the simplest or lowest form of a fraction. An example is given and clearly explained.

The tutorial examines how to solve a system by the Gauss-Jordan method. Students learn about the concept through class notes, examples, and practice problems. Topics include inconsistent systems, general solutions, and row-reduced...

For this activity, students learn to create and edit a matrix using the matrix editor. They use various features in the calculator to perform elementary row operations and convert a matrix to its reduced row echelon form. Finally they...

Students can type any positive or negative number into the square root calculator. The calculator reduces the square root to its simplest radical form.

A complex fraction is a fraction that contains another fraction. Use this Complex Fractions Calculator to do math and add, subtract, multiply and divide complex fractions. Fraction answers are provided in reduced form (lowest terms).

Use this fraction calculator for adding, subtracting, multiplying and dividing fractions. Answers are fractions in lowest terms or mixed numbers in reduced form.

The learning tool investigates the Gauss-Jordan method. The tool performs row operations and reduces matrices.

The Energy Systems and Solutions unit brings students through the exploration of science and engineering concepts as they relate to energy issues in everyday life. Issues surrounding energy production and energy consumption provide a...

This science fair project investigates whether video games, and other forms of mental distraction, have the power to relieve pain. You will research and learn about gatekeeper cells, which control how the brain perceives pain, and how...