Hunkin's Experiments is a group of simple cartoon illustrations of scientific principles. Some would work well in the classroom, but others have little value beyond entertaining students. All of the projects are easy to do. This part...

This source offers videos, solutions, examples, and songs to help kids learn how to order three objects by length and compare the lengths of two objects indirectly by using a third object.

Children will learn about and explore measurement to successfully design a dog house for his or her cutout paper dog. Each section of this weeklong adventure is introduced by a video clip or online game that encourages children to...

[Free Registration/Login Required] Students use similar triangles to determine the height of the base of a tree house. Click learn more to watch a video and click challenge me to answer a practice question.

Children use spatial skills to put together a map that has been broken up into pieces. This activity will help them understand spatial sense and practice using a map.

The federal No Child Left Behind law requires more testing of students, and has spurred some frantic and ineffectual test preparation in many schools, says the author, E. D. Hirsch, Jr. Reading tests must use unpredictable texts to be...

Dr. Math explains how to find distances indirectly by using the Pythagorean theorem.

Middle school middle schoolers explore the Pythagorean Theorem by measuring and calculating diagonal lengths using the Pythagorean Theorem. Students view an animated proof of the Pythagorean Theorem. They access an Internet site to view...

[Free Registration/Login may be required to access all resource tools.] Find unknown side lengths in similar figures.

Just how tall is that object? In this lesson, young scholars will participate in an outdoor group activity using shadows to extend their knowledge of proportions to solve problems dealing with similarity. The cooperative learning groups...

If you think you can handle the Pythagorean Theorem, then this is a math challenge you should try. Explore geometric relationships and measurement in this one page activity from the NCTM Math Challenges for Families series.

Dr. Math offers a way to calculate the altitude of a triangle using only the lengths of the sides of the triangle. He briefly explains how this was used by the Egyptians long ago.

During this research project, students will choose either the direct method or the indirect method to monitor and measure pollution while manipulating one variable. They will develop a research question to work on and present their...

Use this activity to model how scientists use indirect observations to define problems that are not directly measurable.

In this week's Afterschool Adventure, children will practice and explore strategies for solving addition and subtraction problems, such as using counters and rulers, performing mental math, and drawing pictures. As children encounter...

In this instructional activity, eighth grade learners will use their new found knowledge of the Pythagorean Theorem and relate it to the world around them. They will work in cooperative groups to solve problems using the Pythagorean...

In this unit instructional activity, middle schoolers will learn about the Pythagorean Theorem and how it is evident in our everyday world. Students will apply the concept of the Pythagorean Theorem to the squares of a quilt. Each quilt...

During this lesson, eighth grade young scholars will be introduced to the Pythagorean Theorem: a2+b2=c2. They will construct a right triangle on graph paper and draw squares on each side of the triangle. A quiz link requires Java, and...

Drawings and discussion of several methods to estimate the area of an irregular shape, like the state of Texas.

This activity allows the user to practice estimation skills by determining if a given amount is more or less than the number of objects shown, the length of a curve, or the area of a shape. An interactive activity and teacher resources...

This activity allows the user to compare to quantities by estimating. Students use three types of estimations: counting, length, and area. An interactive activity and teacher resources are included.

This activity allows the user to practice estimation skills. Students use three types of estimations: counting, length, and area. An interactive activity and teacher resources are included.

In this activity, students explore map making. Students' read a story, identify the locations of different places in the story, decide the distance between each set of places in the story, and create a map with a legend.

[Free Registration/Login may be required to access all resource tools.] This study guide looks at similar polygons, scale factor (ratio), and triangle similarity.