Article
Science Education Resource Center at Carleton College

Serc: The Sedimentary Processes of Transgression and Regression

For Students 9th - 10th
This article gives a detailed explanation of how transgression and regression of sea levels work to create deposits of sedimentary rocks. Illustrations show the layering that takes place over time. The article discusses how geologists...
Article
Khan Academy

Khan Academy: Intro to Particle Systems

For Students 9th - 10th
An introduction to strategies for implementing programming for a particle system. The focus is to keep track of a system of many elements. A sequence of the movie, Star Trek II: Wrath of Khan is used to illustrate particle system which...