We found 989 reviewed resources for freshwater
Living Organisms as Indicators of Pollutants in Fresh Water Ecosystems
9th - 10th
Young scholars observe the effects of pollution on living organisms. In this pollution lesson plan, students observe fresh water Hydra and look at their structures and movement. They place samples of pond and lake water on the Hydra and...
The Ancient Ingenuity of Water Harvesting
17 mins 7th - 12th CCSS: Adaptable
Water is essential to life on earth. How is it then, that people can survive in desert regions with very limited access to fresh water? Through ingenious architecture and engineering, communities in India's Golden Desert have been able...
Changing Planet: The Warming of Our Large Lakes - Reasons for Concern
7th - 10th
Another A+ instructional activity on the impact of climate change comes to you from the National Earth Science Teachers Association. In this installment, learners model the stratification of water in lakes due to temperature differences....