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Hand Lotion Analysis
Students prepare a sample of a commercial hand lotion for analysis by HPLC to determine the percent composition of two common cosmetic preservatives, methylparaben and propylparaben. They perform the analysis and the data is evaluated to...
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DNA on Stick
Students experience a "hands-on" activity to get visual evidence of the physical nature of DNA and the process of DNA purification. They explore one method of chromosomal DNA isolation and DNA extraction.
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Designing a Flotation Strategy for the Purification of Recycling
Twelfth graders work in teams to design a method of recycled plastics purification by flotation. They base their design on the concept that different kinds of plastics have different densities and keep overall costs and purification time...
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Revised: Adventures in Earth Day: Why Do We Care About Our Environment? - Biology Teaching Thesis
To describe the ecological and aesthetic importance of the Potomac River, Middle schoolers name the ways in which the river's values are jeopardized and explain the purpose of Earth Day. They write a response to a newspaper article in a...
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Drinking Water and Water Purification
Sixth graders design experiments to compare the amount of bacteria in river water to the amount in purified tap water. They explore how water purification removes bacteria and pollution from the water. Students examine the steps of the...
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Purification of Water
Students study the process of water purification and explain why it was important to treat it. In this water purification lesson students purify drinking water and explain the factors that affect water quality.
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PA Watersheds, Many Ways to the Sea
High schoolers examine the water cycle and the factors that interact with watersheds. In this watersheds instructional activity students describe the purification process, trace the flow of infiltrate water through aquifers, and...
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Mock-Muck
Students purify water samples using various techniques. In this water treatment lesson, students complete a variety of activities to learn about the process. A data chart is included for recording results. A crossword puzzle is included...
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Using Ion Exchange Chromatography to Separate Proteins
Students explore protein purification by separating a positively charged molecule, lysozyme, from a negatively charged molecule, albumin, at neutral pH using ion exchange chromatography.
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How To Get Clear On Water
Tenth graders investigate different systems that are used to purify water. They have class discussion about the benefits and challenges that different countries would face with the implementation of the systems. Students explain the...
Cornell University
Nano Interactions
Tiny particles can provide big learning opportunities! Middle school scientists explore the world of nanoparticles through reading, discussion, and experiment. Collaborative groups first apply nanotechnology to determine water hardness....
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"Cereal" Comic Strip
Young scholars discuss how wheat is important to our everyday lives, from food to insulation, focusing on how wheat grains are processed into food items. Students then create a comic strip of the steps of processing grain to demonstrate...
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Bacteria in Drinking Water And Water Purification
Students explore how sewer systems can contribute to water pollution and perform an experiment to see how well a water purification technique can protect against water-born microbial illnesses. They compare the bacterial growth from...
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Earth Day
Pupils explain that there are pollutants in the Anacostia River, what those pollutants can cause, and how to prevent further pollution. They read about pollution and graph levels of fecal coliform in the water.
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Water filtration with Plants
Sixth graders explain how soil and plants effect contaminated water in nature. In this filtration lesson, 6th graders work in groups to test biofiltration units. Students determine which biofiltration units work best and how they can...
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The Arizona Hedgehog Cactus: Endangered Species or not?: Biology, Plants
In this lesson plan students will study the: "Classification of Echinocereus triglochidiatus and Geographical Ranges of its Varieties." Students read background material and scientific literature to analyze the cactus populations and...
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Water Resources Engineering
Students illustrate the chemical differences between surface and tap-water. They investigate the common chemical and physical parameters relevant for water quality and gain hands on experience with water quality testing.
They enhance...
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Water Purification
Learners develop an understanding and appreciation of water purification techniques and their implications for health maintenance.
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DNA Isolation from Plant Tissue
Young scholars perform an experiment to extract and observe DNA from plant Tissue. They read about the procedure and relate it to the procedure used to isolate DNA from an endangered plant species. This is lesson three in a nine lesson...
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Got Water?
Students determine that delivering clean, fresh water to citizens around the world involves and affects politics, economics, international relations, and technology. They brainstorm a list of factors that might affect their town's...
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What Does That DNA Molecule Really Look Like???
Students extract DNA from animal liver cells. They separate, collect and describe the appearance from the extracted DNA while role playing as an intern in a city's forensics.
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Picnics-- Chinese Style
Third graders explore about the Chinese rituals of poetry competition. They compare and contrast Chinese picnics with American picnics. Students create short poems, celebrating their own spring poetry picnic. They discuss words or...
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Dissolved Oxygen
Students examine characteristics of dissolved oxygen. Given a stream temperature, and stream conditions, students study the relationships of the dissolved oygen in a stream, in organic waste loads.
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SEPARATION OF A STARCH-GLUCOSE MIXTURE USING GEL FILTRATION
High schoolers make a starch-glucose solution and pour it through gel in order to separate the starch from the glucose. They examine how starch is a larger molecule than glucose and test for the presence of these substances using other...
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