[Free Registration/Login may be required to access all resource tools.] Round whole numbers in order to estimate sums and differences.

In this video segment from Cyberchase, Inez estimates whether she has enough jelly beans in her large container to decorate all of the cookies in her batch.

[Free Registration/Login Required] The teacher will use this lesson plan flipchart to review estimation.

[Free Registration/Login may be required to access all resource tools.] In this lesson students use leading digits to estimate decimal products and quotients. Students examine guided notes, review guided practice, watch instructional...

At its core, the LEGO MINDSTORMS product provides a programmable microprocessor. Students use the EV3 processor to simulate an experiment involving thousands of uniformly random points placed within a unit square. Using the underlying...

Students learn about trigonometry, geometry and measurements while participating in a hands-on interaction with LEGO MINDSTORMS NXT technology. First they review fundamental geometrical and trigonometric concepts. Then, they estimate the...

A fact sheet listing the numbers of military service members, deaths, and woundings in each war America has been involved in since the American Revolution. It also gives names of the last survivors of earlier wars, estimates of living...

Students use conductivity meters to measure various salt and water solutions, as indicated by the number of LEDs (light emitting diodes) that illuminate on the meter. Students create calibration curves using known amounts of table salt...

Students practice their multiplication skills using robots with wheels built from LEGO MINDSTORMS NXT kits. They brainstorm distance travelled by the robots without physically measuring distance and then apply their math skills to...

Students use three tracks marked on the floor, one in yards, one in feet and one in inches. As they start and stop a robot specific distances on a "runway," they can easily determine the equivalent measurements in other units by looking...

Franklin works with Laverne to create a budget for a job painting a room, in this video segment from TV 411.

Use Glencoe's randomly generated self-checking quiz to test your knowledge of estimating sums and differences. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click the...

What angles can you see in these photos of Olympic sports? Can you estimate them? This challenging activity is aimed at older primary pupils at Key Stage 2.

Does he have a chance? In this math challenge, estimate Helix's chances of winning the bowling tournament.

[Free Registration/Login may be required to access all resource tools.] Add and subtract decimals with and without rounding

In this sixth-grade lesson, students estimate the weight of their backpacks and construct scatter plots of actual versus estimated weights.

The handout has students estimate the slope of a given line. The math graph is available in PDF format.

The handout has students estimate the slope of a given line. The math graph is available in PDF format.

[Free Registration/Login Required] All students use numbers, number systems and equivalent forms (including number words, objects, and graphs) to compute, estimate, and solve theoretical and practical problems.

This calculator is a great way to estimate the carbon dioxide emissions resulting from your daily activities, such as household electricity use, food choices, and transportation.

Variety of cultural and natural resources including five volcanic cones, hundreds of archeological sites and an estimated 25,000 images carved by native peoples and early Spanish settlers.

[Free Registration/Login may be required to access all resource tools.] In this lesson students round small decimals to the place value of the leading digit. Students examine guided notes, review guided practice, watch instructional...