[Free Registration/Login may be required to access all resource tools.] Explores Einstein's theory of gravity and the warping of space-time.

A brief video that outlines the ways that people have kept time throughout history. [3:48] Includes a short quiz and a list of additional resources to explore.

In this lesson, students learn about the concept of "time capsules" and then apply the idea by selecting time capsule contents to represent both the time they live in and their own lives and tastes. They then extend this idea to online...

In this lesson students will understand the concept of elapsed time and be able to calculate elapsed time given the starting and ending time.

This relief scene from around 100 to 300 depicts the dream of Maya, the mother of the historical Buddha. Queen Maya is asleep in her palace under a full moon. An attendant stands guard outside. In her dream, a white elephant enters her...

Exhibition on the healing practices and traditions of Native Americans from 100,000 years ago up to the present day. Information is organized by theme and by historical time period, and many well known Native American figures are profiled.

This lesson will require students to collect data through listening, counting and timing. They will use ratios, rates, and proportions to report data. They will also demonstrate an understanding of the concepts of rhythm and tempo in music.

In this lab activity, middle schoolers investigate the concept of frame of reference by observing, describing and drawing the same walking motion from different positions. Additionally, they determine the effect of frame of reference on...

An 81-page slideshow that looks at the principles of geology with respect to relative dating, at different concepts describing geological processes, at absolute age and radiometric dating, at the eons and eras in the geologic time scale,...

This site provides students practice with the concept of completing the square. Students can learn about the topic by completing an interactive tutorial. Students can then take a ten question timed test to practice the skill.

This site provides students practice with the concept of completing the square. Students can learn about the topic by completing an interactive tutorial. Students can then take a ten question timed test to practice the skill.

At T.V. 411 you can explore the concept of paying over time with situations involving credit cards, rent to own items, and more. This interactive lesson gives the learner an opportunity to make decisions about money management.

Introduce students to the vastness of geologic time and the concept of scale.

An explanation the mole (named for molecule) and Avogadro's Number. One mole of a substance is equal to 6.022 times 10 to 23rd power units of that substance (such as atoms, molecules, or ions). The number 6.022 time 10 to 23rd power is...

This website integrates video footage and information with lesson plans and activities to teach students about the concept of relative dating. Students will graph a range chart for ammonites, determine the geologic age for several rocks,...

[Free Registration/Login may be required to access all resource tools.] The video involves filling in a chart of start time, end time, and elapsed time describing how to add and subtract time in hour and minutes. The video is followed by...

[Free Registration/Login may be required to access all resource tools.] The video shows how to find elapsed time, start time, or end time on various timelines. The video is followed by a series of practice questions to assess student...

This lesson teaches the concept of plate tectonics. Learners will access the United States Geological Survey National Earthquake Information Center and plot the longitude latitude and depth of earthquakes on a physiographic chart.

This site provides students practice with the concept of interquartile range. Students can learn about the topic by completing an interactive tutorial. Students can then take a ten question timed test to practice the skill.

Students will to organize data from the USA TODAY Snapshot, "Is leisure time really shrinking?," into two scatter plots and determine the quadratic model for each scatter plot. Students will determine if these graphs intersect and learn...

This site provides students practice with the concept of mean. Students can learn about the topic by completing an interactive tutorial. Students can then take a ten question timed test to practice the skill.

This site provides students practice with the concept of finding the mean. Students can learn about the topic by completing an interactive tutorial. Students can then take a ten question timed test to practice the skill.

This site provides students practice with the concept of range and mode. Students can learn about the topic by completing an interactive tutorial. Students can then take a ten question timed test to practice the skill.

In this simulation of a doctor's office, students play the roles of physician, nurse, patients, and time-keeper, with the objective to improve the patient waiting time. They collect and graph data as part of their analysis. This serves...