Effects of Nitrate and Phosphate Changes on the Growth of Algae

Diabetes is the most common endocrine disorder in the United States, affecting about eight percent of the total population. The working parts of the endocrine system are examined in a video that demonstrates how cells receive information...

Algae is a good thing, but too much is a bad thing. In this environmental science fair project, grow algae in several concentrations of fertilizer and observe its effect on algal growth.

Students visit three sites to investigate the areas where there is very high sensitivity for ground-water pollution. They also test the quality of water, measuring the dissolved oxygen, pH, total phosphate, nitrates, turbidity, and...

Young scientists roll up their sleeves and get a little dirty in this three-day earth science investigation. Following the scientific method, children monitor the growth of algae in pond water samples in order to determine the role that...

The many images and labeled diagrams in this PowerPoint will help learners understand different areas of the endocrine system. The slide show starts with information about the absorption of lipid and protein based hormones, and then...

Students design an investigation using yeast. In this environmental engineering lesson, students design an investigation to determine how environmental factors affect the growth of yeast. They will collect quantitative data and discuss...

Develop a model of a wastewater treatment center. The last activity of the unit has pupils mix a lake water sample into a tank of water containing fertilizers. Over time, the algae from the lake water grows and removes the nutrient-rich...

This learning module looks at features and types of agricultural systems, including large scale commercial farming, small scale subsistence farming, causes and effects of food shortages, and how food aid is distributed during a famine....

A lab experiment, in a series of experiments, that investigates fisheries. In this lab, students test the effects of fertilizers and other pollutants on a model ecosystem. Students also examine 2 years of ocean color (chlorophyll...

A complete, student-led lesson on the endocrine system. Students work their way through illustrated and animated tutorials, and answer review questions along the way. There is a self-checking quiz at the end of the lesson.