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Acid-Base Solutions
Conditions of Use:
No Strings Attached
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How do strong and weak acids differ? Use lab tools on your computer to find out! Dip the paper or the probe into solution to measure the pH, or put in the electrodes to measure the conductivity. Then see how concentration and strength affect pH. Can a weak acid solution have the same pH as a strong acid solution?

Subject:
Chemistry
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Chris Malley
Kathy Perkins
Kelly Lancaster
Patricia Loeblein
Robert Parson
Date Added:
09/01/2010
Activities for Studying Tree Rings Online
Conditions of Use:
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Selected resources provide three web-based activities to complement science lessons in an issue of Beyond Weather and the Water Cycle. The free, online magazine for Grades K-5 teachers explores the essential principles of climate literacy.

Subject:
Education
Material Type:
Activity/Lab
Lesson Plan
Teaching/Learning Strategy
Provider:
Ohio State University
Ohio State University College of Education and Human Ecology
Provider Set:
Beyond Weather and the Water Cycle
Author:
Jessica Fries-Gaither
National Science Foundation
Date Added:
05/30/2012
All About Water!
Conditions of Use:
Read the Fine Print
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Students learn about the differences between types of water (surface and ground), as well as the differences between streams, rivers and lakes. Then, they learn about dissolved organic matter (DOM), and the role it plays in identifying drinking water sources. Finally, students are introduced to conventional drinking water treatment processes.

Subject:
Engineering
Hydrology
Material Type:
Lesson Plan
Provider:
TeachEngineering
Provider Set:
TeachEngineering
Author:
Jessica Ebert
Marissa H. Forbes
Date Added:
09/18/2014
American Museum of Natural History Exhibit on Water and Additional Resources
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This article highlights resources related to water from the American Museum of Natural History and at-home activities on ice and water.

Subject:
Environmental Science
Material Type:
Lesson Plan
Provider:
Ohio State University College of Education and Human Ecology
Provider Set:
Beyond Penguins and Polar Bears: An Online Magazine for K-5 Teachers
Author:
Robert Payo
Date Added:
10/17/2014
America's Underwater Treasures
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The theme of this guide is: achieving ocean health and balance through investigation and data collection techniques that show the necessity for marine sanctuaries, the effects of fisheries and the management practices being followed in today's oceans.

Subject:
Oceanography
Material Type:
Teaching/Learning Strategy
Provider:
PBS
Provider Set:
Jean Michel Costeau: Ocean Adventures
Author:
Elsie Ovrahim
Date Added:
07/16/2012
Analytical Techniques for Studying Environmental and Geologic Samples, Spring 2011
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This is a laboratory course supplemented by lectures that focus on selected analytical facilities that are commonly used to determine the mineralogy, elemental abundance and isotopic ratios of Sr and Pb in rocks, soils, sediments and water.

Subject:
Geology
Material Type:
Full Course
Provider:
MIT
Provider Set:
MIT OpenCourseWare
Author:
Bowring, Samuel
Boyle, Edward
Chatterjee, Nilanjan
Dudas, Francis
Date Added:
01/01/2011
Anchors Away
Conditions of Use:
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In this activity, students discover the relationship between an object's mass and the amount of space it takes up (its volume). Students learn about the concept of displacement and how an object can float if it displaces enough water, and the concept of density and its relationship to mass and volume.

Subject:
Engineering
Material Type:
Activity/Lab
Provider:
TeachEngineering
Provider Set:
TeachEngineering
Date Added:
09/18/2014
The Ancient Ingenuity of Water Harvesting
Rating

With wisdom and wit, Anupam Mishra talks about the amazing feats of engineering built centuries ago by the people of India's Golden Desert to harvest water. These structures are still used today -- and are often superior to modern water megaprojects. A quiz, thought provoking question, and links for further study are provided to create a lesson around the 17-minute video. Educators may use the platform to easily "Flip" or create their own lesson for use with their students of any age or level.

Subject:
Hydrology
Material Type:
Lecture
Provider:
TED
Provider Set:
TED-Ed
Author:
Anupam Mishra
Date Added:
12/03/2009
Aquatic Chemistry, Fall 2005
Conditions of Use:
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This course details the quantitative treatment of chemical processes in aquatic systems such as lakes, oceans, rivers, estuaries, groundwaters, and wastewaters. It includes a brief review of chemical thermodynamics that is followed by discussion of acid-base, precipitation-dissolution, coordination, and reduction-oxidation reactions. Emphasis is on equilibrium calculations as a tool for understanding the variables that govern the chemical composition of aquatic systems and the fate of inorganic pollutants.

Subject:
Environmental Science
Chemistry
Material Type:
Full Course
Provider:
MIT
Provider Set:
MIT OpenCourseWare
Author:
Moffett, Jim
Seewald, Jeff
Tivey, Meg
Date Added:
01/01/2005
Are Dams Forever?
Conditions of Use:
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Students learn that dams do not last forever. Similar to other human-made structures, such as roads and bridges, dams require regular maintenance and have a finite lifespan. Many dams built during the 1930-70s, an era of intensive dam construction, have an expected life of 50-100 years. Due to inadequate maintenance and/or for environmental reasons, some of these dams will fail or be removed in the next 50 years. The engineers with Splash Engineering have an ethical obligation to remind Thirsty County of the maintenance and lifespan concerns associated with its dam.

Subject:
Engineering
Hydrology
Material Type:
Lesson Plan
Provider:
TeachEngineering
Provider Set:
TeachEngineering
Author:
Denali Lander
Denise W. Carlson
Jeff Lyng
Kristin Field
Date Added:
09/18/2014
An Arm and a Leg
Conditions of Use:
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As an introduction to bioengineering, student teams are given the engineering challenge to design and build prototype artificial limbs using a simple syringe system and limited resources. As part of a NASA lunar mission scenario, they determine which substance, water (liquid) or air (gas), makes the appendages more efficient.

Subject:
Engineering
Material Type:
Activity/Lab
Provider:
TeachEngineering
Provider Set:
TeachEngineering
Date Added:
09/18/2014
Atlas of the Pacific Northwest
Conditions of Use:
Read the Fine Print
Rating

This 2018 edition is the first to be released in a digital, fully-interactive format, designed to highlight facets of the Pacific Northwest landscape with novel approaches to data presentation. Where previous editions of the atlas were designed to ask and answer questions, this atlas serves as a platform for the geographically curious to explore the region, providing as many critical questions as it does critical answers.

Beyond this page are maps of the familiar and the unfamiliar. Migration maps highlight human movement between the Pacific Northwest and the rest of the United States; a wildfire timeline chronicles the year-to-year spread of modern and historical fires; and the watershed guide abandons traditional political boundaries in favor of natural, hydrological borders. All data in the atlas were gathered from publically accessible sources, compiled using open-source software and coding libraries. This is an atlas designed to be open, responsive, and to satisfy the geographic curiosity of any and all interested.

Subject:
Physical Geography
Material Type:
Data Set
Author:
Institute for Natural Resources
Oregon State University Libraries and Press
Date Added:
10/30/2018
The Beautiful Math of Coral
Rating

Science writer Margaret Wertheim re-creates the creatures of the coral reefs using a technique invented by a mathematician -- simultaneously celebrating the amazements of the reef, and deep-diving into the hyperbolic underpinnings of coral creation. A quiz, thought provoking question, and links for further study are provided to create a lesson around the 15-minute video. Educators may use the platform to easily "Flip" or create their own lesson for use with their students of any age or level.

Subject:
Arts and Humanities
Material Type:
Lecture
Provider:
TED
Provider Set:
TED-Ed
Author:
Margaret Wertheim
Date Added:
04/20/2009
Biology
Conditions of Use:
No Strings Attached
Rating

Biology is designed for multi-semester biology courses for science majors. It is grounded on an evolutionary basis and includes exciting features that highlight careers in the biological sciences and everyday applications of the concepts at hand. To meet the needs of today’s instructors and students, some content has been strategically condensed while maintaining the overall scope and coverage of traditional texts for this course. Instructors can customize the book, adapting it to the approach that works best in their classroom. Biology also includes an innovative art program that incorporates critical thinking and clicker questions to help students understand—and apply—key concepts.

Subject:
Life Science
Biology
Material Type:
Full Course
Provider:
Rice University
Provider Set:
OpenStax College
Date Added:
08/22/2012
Biology, Ecology, Ecology and the Biosphere, Biogeography
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By the end of this section, you will be able to:Define biogeographyList and describe abiotic factors that affect the global distribution of plant and animal speciesCompare the impact of abiotic forces on aquatic and terrestrial environmentsSummarize the affect of abiotic factors on net primary productivity

Subject:
Applied Science
Life Science
Biology
Material Type:
Module
Provider:
Rice University
Provider Set:
OpenStax College