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This is an excellent demonstration for soil erosion. Soil erosion can be a difficult concept for students to understand. This visual demonstration allows students to see and experience erosion and various erosion factors. Follow-up designs could entail how to reduce erosion and design experiments for the ideas.

This is a great activity that can be adapted to any major river. I have done this with students of all ages. A great way to introduce Non-Point Source Pollution. I have used this demonstration with all age groups and it has a powerful impact.

A new study led by researchers at UC Berkeley and Clinica de Salud del Valle de Salinas demonstrates how even a short break from certain kinds of makeup, shampoos and lotions can lead to a significant drop in levels of hormone-disrupting chemicals in the body.

Enormous amount of instructional material for teachers and students. Compiled by Sarah Bordenstein, Marine Biological Laboratory The Winogradsky Column is an excellent activity, specifically for grades 5 - 12, to demonstrate the growth of microorganisms. As a result of this activity, students will: learn about the metabolic diversity of prokaryotes, applying terms such as phototroph, chemotroph, autotroph, and heterotroph.