Microbes & History: Microbial influence on the spread of Civilization

How does dirty water get clean enough to drink? After viewing a PowerPoint that outlines the process water goes through at a water treatment plant, groups work together to design a chlorination chamber for a treatment plant.

In this dietary fibers worksheet, students compare and contrast the properties of different fibers: cellulose, hemicellulose, pectin, guar, agar, and xanthan gum. This worksheet has 5 short answer questions.

In a discovery that would make Betty Rubble squeal with joy, scientists discovered fibers in a cave from 34,000 years ago that were dyed in pinks and blues. The video details the findings, which were not only unique because of the...

Ninth graders use model-building to help comprehend the forces and phenomena at work in the world around them. They describe gravity as a universal force that pulls everything toward the center of the earth. Students distinguish between...