Curated OER
Condensation Polymerization: Preparation of Two Types of Polyesters
College-level or AP chemists use phthalic anhydride to synthesize two different polyesters, one linear and one cross-linked in structure. A detailed materials list and well-written procedures are provided on a lab sheet. Learners write...
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# 18 Determination of the Set Time for Epoxy Adhesive
Students recognize epoxy glue formation as two part polymerization (usually the curing agents act as co-monomers). They monitor the reaction by the changes in viscosity of the reacting mass, the temperature rise and fall, and the...
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Condensation Polymerization: Preparation of Nylon 6/6
Students participate in a lab activity in which they synthesize nylon 6/6, calculate the percent yield by mass, identify the polymer as thermoplastic or thermoset, and determine the melting point, density and end-product use of the polymer.
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Investigation of Crystallinity in Polymeric Materials
A kaleidoscope is constructed using polarizing polymer paper and then low-density polyethylene, high-density polyethylene, and polypropylene are all melted onto individual glass slides and examined through a microscope. The intent is to...
Curated OER
Dibble Pond Ecosystem
Learners collect specimen and analyze it. In this biology lesson, students analyze and evaluate the diversity found in specific environment. They use the correct terminology as they do their write up for the experiment.
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Food Science, Scientific Method: Reliability and Validity in Empirical Research
Secondary learners explore food science by conducting an experiment using the scientific method and creating a science fair project based on their findings. They learn about food technology and modern research development. They...
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Our Future - Nuclear Power?
Learners comprehend that there are risks involved with using nuclear power. They write persuasive paragraphs for and against nuclear power. Students analyze the environmental issues and risks with nuclear power.
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Related to Natural Products
High schoolers examine how the microwave delivers energy at different power levels. They work together to complete experiments on various materials and different power levels. They answer discussion questions to end the lesson.
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In Touch with Apples
Students read "How To Make an Apple Pie and See the World", the story of a girl who traveled the world to find the ingredients to make her apple pie. They conduct a series of interdisciplinary activities including testing their senses,...
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We're Off To the Races!
Second graders use a magnet to "race" objects from one side of a racing track to another. They predict what the results are, then run the race. Pupils sort and graph which items were successfully moved, they attempt to race again. This...
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Sunrise/Sunset
Third graders discovver what causes the dramatic colors of a sunset by seeing the changing color of light as it passes through a clear container of water to which milk is gradually added. They measure the liquids and observe what happens...
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What Is Special About Polyethylene Food Storage Bags?
Young scholars participate in an investigation in which they compare a polyethylene bag designed for recycling or disposal with a polyethylene food storage bag. Students use hexane to determine the differences between the low density...
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Matters of Milk and Marshmallows
Students observe a teacher demonstration o classifying matter by its physical properties of shape and size. After discussing the definition of matter, students describe the state of matter. They sing a song to the tune of "Bingo." In...
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Global Warming and Hurricanes: Is an Increase in the Number of Stronger Hurricanes an Indicator of Global Warming
Ninth graders investigate whether stronger hurricanes are signs of global warming. In this environmental science lesson, 9th graders research both sides of the issue about global warming. They debate for or against this issue in class.
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Pop Rocket - Trash to Treasure
First off, Newton's laws of motion aren't often taught at 2nd grade, so this activity may be more appropriate for upper elementary learners. It begins with a discussion and demonstration of the laws of motion, and then has individuals...
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What is Everything Made of?
Students observe a demonstration on how we see space between water molecules. In this experimental lesson students discover what elements make up the things around them and discuss what they learned.
Curated OER
The Periodic Table of Elements
Eleventh graders study the use of the periodic table to develop a better understanding of the chemical elements.