NASA
Nasa: Slr and Gps (And Plate Tectonics and Earthquakes) [Pdf]
This slideshow explains how satellites are used to measure the movement of tectonic plates.
Texas Instruments
Texas Instruments: Stepping to the Greatest Integer: Greatest Integer Function
In this activity, students' will use a motion detector to collect position data showing evenly-spaced jumps in value. They will then model this data using the greatest integer function.
Sophia Learning
Sophia: Proxemics: Lesson 2
At the end of this tutorial, the learner will understand that different cultures may attribute very different meanings to positioning, closeness, and use of space in communication. It is 2 of 3 in the series titled "Proxemics."
Other
Elated Communications: Css Tutorials
This tutorial shows you how to create Cascading Style Sheets, the powerful supplement to HTML that allows you complete control over the look of your websites. Find out some of the cool tricks you can achieve with them.
Sophia Learning
Sophia: The Atom: Lesson 2
This lesson will illustrate that an atom is mostly empty space and has a positively charged, massive core (containing both protons and neutrons called the nucleus) surrounded by negatively charged electrons. It is 2 of 3 in the series...