Curated OER
The Chemistry of Fertilizers
Young scholars use a series of hands-on labs and activities, practice problems, discussions and writing assignments, students investigate about fertilizer chemistry as they break compounds into ions, make a fertilizer and test various...
Curated OER
Fertilizers, Pesticides and Human Health
Students define several vocabulary terms related to chemicals and toxicology. Students calculate chemical concentrations in water and explain the toxicological principles that govern safety of substances. Students conduct an...
Curated OER
Ammonium Nitrate- Stoichiometry
Students quantify the relationship between moles and mass. They comprehend that ammonium nitrate is used as a fertilizer and an explosive. Students study the chemistry of ammonium nitrate and consider the advantages and disadvantages of...
Curated OER
Auxin: Indole-3-Acetic Acid (AAA), A Hormone with Diverse Effects: Synthesis and Applications
Students synthesize Indole-3-Acetic acid from 3-indolylacetonitrile. In this biochemistry lesson, students determine the effect of different concentrations of IAA on lima beans. They explain how hormones help in plant development.
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What is Wrong with My Pond?
Middle schoolers examine various pond water samples to identify water quality. In this water quality lesson, students will identify levels of nitrates, ammonia, pH, hardness,and alkalinity in pond water. They will explain importance of...
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Root, Root, Root for the Nutrients
Young scholars observe the growth of a seed, predict what will happen when seeds are planted without soil, and conduct an experiment using a hydroponics system.
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Ammonium Nitrate - Heat of Solution
Students quantify the relationship between temperature, energy and heat
and define an endothermic reaction. They measure the energy change caused by dissolving one mole of ammonium nitrate in water.
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Determination of Phosphates
Students engage in a laboratory lesson in order to increase understanding of the impact of phosphates at the chemical and ecological levels. The lab exercise is completed with the goal of getting them to predict the outcomes and future...
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How Toxic Is It?
Students participate in an activity in which they investigate the scientific method and seed germination as well as practice graphing and metric measuring skills. Students examine toxicity by exposing Wisconsin Fast Plants seeds to toxic...
University of Southern California
Mastering Microbes
Small but mighty! Learners explore the role of microbes in a healthy ecosystem. An engaging lesson asks pupils to design an aquaponics system that demonstrates that healthy microbes are necessary to maintain the ecosystem.
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You Are What You Eat: Chemical Residues and Consumers
Learners determine how evidence gained from a simulated test for the presence of pesticide residues can be used to determine risk. They use peas to simulate pesticide residue testing.
Curated OER
Auxin: Indole-3-Acetic Acid
Students identify auxins from their structural formulas. They understand the process of refluxing in chemical synthesis. Students perform thin layer chromatography using silica gel plates to differentiate chemical substances.
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The Cell
Students study the basic processes by which cells divide and transfer their genetic information. They recognize and distinguish possible inherited traits and through the discovery method of the facts and principles of inheritance. this...
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Water Quality Tests Explained
Students define all eight water quality parameters and list at list one source for each of the eight water quality parameters. They determine how each of the eight parameters affect river ecosystems.
Curated OER
Water Quality Tests Explained
Students identify the eight tests done to check for water quality. In this ecology lesson, students explain why it's important to test water in rivers. They explore sources of river water pollution.
Curated OER
Dishing the Dirt Part 3
Students collect and examine different soil samples. They test for specific types of soil elements and the pH level. They answer questions about optimum growing conditions as well.
Curated OER
Graphical Determination of Density
Learners determine the density of metal shot by a graphical method using significant digits in making measurements and calculations. Students graph a seris of laboratory measurements and determine density from a mass verses volume graph.