Teach young environmentalists to protect their planet's resources with a set of interactive experiments. Kindergartners and other youngsters learn about watersheds and the water cycle, while older elementary learners focus on fertilizer...

Engineering design projects serve as great opportunities for collaborative problem solving. In this case, students work in small groups designing, building, and eventually testing a structure that meets a teacher-specified objective. It...

Students explore percentages in real world situations. In this percents lesson, students determine the final sales price after discounts. Students interview community members and determine how percentages are used in the real world.

Don't be dense—use a robust resource. The second installment of a five-part Floaters and Sinkers unit has learners determine the densities of several objects. As part of the activity, they learn the displacement method for finding...

Sharpen your pencil and grab a ruler, it's time to draw some quadrilaterals! Given the definition of a parallelogram, rectangle, and rhombus, learners draw examples and nonexamples of each figure. The three definitions are...

Defines root of a quadratic equation. Portrays graphically what quadratic roots look like. Tutorial includes two basic examples where roots are discovered, and links to pertinent topics elsewhere on the site and a math forum organized by...

You will want to "hop" right on this problem and see if you can find a solution at this one page website. Then you can check it right there.

On this one page website the problem will require you to use your problem solving skills to find your solution. You can then check it right at the website against the solution they have available.

As you start to work on this problem, keep in mind that in England cookies are called biscuits. Solution provided.

Help Santa and the elves keep track of how many blocks they need for their alphabet blocks. Solution provided.

Fill in the chart and see which shapes and which colors belong in which rows and columns. The solution is readily available at this one page website.

Sharpen your problem solving skills and figure out a solution for this interesting problem. The solution is on this one page website so that you can check your answer.

On this one page website use a table to help you organize the information so that you can solve this cube problem. When you are finished you can check your answer right at the website.