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What lifeforms can be found in natural water sources such as lakes?
Ecologists divide freshwater ecosystems into bodies of running water and bodies of standing water. In the latter the current slows and most suspended particles settle to the bottom. Lakes and ponds are bodies of standing water that will serve as the sources for water samples to investigate freshwater ecosystems.

Difficulty: Middle school

How do organisms respond to changes in the environment?
To observe the reaction of living cells to mechanical and chemical stimuli. To observe the streaming of protoplasma in living cells. To identify the relationship between cell response and survival.

Difficulty: Elementary school

How to make a model ecosystem in a bottle
In this experiment students will construct and monitor a model ecosystem. With it they will design an experiment to better understand the impact of man-made changes on biological processes in air and water.

Difficulty: Elementary school

What is the relationship between soil erosion by water and the destruction of the rain forests?
1. observe that soil erosion occurs when the water washes the soil away from the trays. 2. record their data. 3. construct a general scientific understanding that plants hold soil in place via roots and help prevent soil erosion by water. 4. conclude that soil erosion by water increases with the destruction of the rain forests.

Difficulty: High school

How does the shoe making industry impact our environment?
Students will describe how shoe design, manufacturing, retailing, consumer use, and disposal impact environments and societies. Students will discuss ways to reduce, reuse, or recycle resources in the life-cycle for a shoe product.

Difficulty: Middle school

What is the effect of trash and garbage on the enviroment?
The objective of this experiment is to analyze individual solid waste management habits, to understand what is biodegradable and what is non-biodegradable, an also to understand why composting is a landfill alternative.

Difficulty: Elementary school

Understanding biological communities
List familiar organisms found in several different communities. Distinguish between producer and consumer organisms in your list. Examine and identify as many organisms as possible from a soil community.

Difficulty: Middle school

How to identify biodegradable materials
The goal of this experiment is to define biodegradable and non-biodegradable materials, and to identify what materials are biodegradable.

Difficulty: Middle school

Demonstrate the principles involved in the formation of clouds
The purpose to this activity is to demonstrate to the students the direct affects of pressure and temperature on cloud formation.

Difficulty: Elementary school

How can we forecast the weather?
using this equipment, you will show how it is possible to forecast the weather up to 48 hours in advance: # thermometer # barometer (recording barometer would be the best type) # weather vane # anemometer # weather charts # hygrometer # paper and pencil for notes.

Difficulty: Middle school

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