Curated OER
H2O2 Decomposition Lab I
Students conduct an experiment to determine how much hydrogen peroxide (H2O2) is actually in a store-bought solution of H2O2.
Curated OER
Spectrophotometry Lab
Students use a machine called a spectrophotometer to determine how much light is absorbed by certain substances. Students record the absorbance and the % of light transmitted for different color solutions, graph their results, and then...
Curated OER
From Polymers to Bioplastics: Looking Toward Finding Renewable Resources
Students investigate the properties of polymers. In this chemistry lesson, students explain the importance of energy sources. They produce a bioplastic from the lab and evaluate its structural integrity.
Curated OER
ISOLATION OF DNA FROM ONION
Students perform a laboratory exercise designed to show how DNA can easily be extracted from onion cells. They conduct an optional test for the presence of DNA using standard lab equipment.
Curated OER
Identification of Animals by Serum Electrophoresis
Students compare their unknown serum against a set of known serum standards and determine the animal source of their serum. They write a lab report to communicate their results.
Curated OER
Survival Still
High schoolers explain how to desalinate water using solar energy. In this solar lesson students complete a lab activity and explain capillary water.
Curated OER
Photosynthesis: Intake of Carbon Dioxide - Production of Oxygen
Students, after a long-term observation of photosynthesis with aquatic plants, assess the benefits of photosynthesis towards all living organisms. They explain in their own words the two cycles within photosynthesis. Guided discussion...
Curated OER
Watch the Screen!
Students explore screening processes for biological activity. In this deep sea lesson students complete a lab activity.
Curated OER
Acid Rain: Where Have All the Rainbows Gone?
Students study the pH scale and sources of acid precipitation. In this acid rain lesson plan students complete a lab on acid rain then complete a handout.
Curated OER
Molecular Explorations
Pupils explain the processes for separating DNA from tissue and separating complex mixtures. In this exploratory lesson students complete a lab where they extract DNA.
Curated OER
DETERMINING THE CONCENTRATION OF A SOLUTION: BEER'S LAW
Students determine the concentration of an unknown nickel (II) sulfate solution by using the colorimeter.
Curated OER
Seltzer Breath
High schoolers investigate "indicator" (Bromothymol Blue or BTB) to test for the presence of certain chemicals in liquids and gases. They compare distilled water and seltzer water for presence of carbon dioxide.
Curated OER
ISOLATION OF DNA FROM ONION
Learners perform a lab in which they extract DNA from onion cells. Students break through the cell and nuclear membranes and then break down the protein that the DNA is wrapped around.
Curated OER
How Can You Prevent Spoilage?
Students complete laboratory activity to discover what temperature is most effective in prohibiting bacterial growth in two percent milk. Students then write lab report detailing findings.
Curated OER
Water You Can Use from the Air Conditioner
Students work together to research water quantity, quality and safety standards. They complete a lab to discover how to use the water from an air conditioner. They write a paper to show their findings.
Curated OER
Electroplating for Corrosion Protection: Redox in Action
Students define what a redox reaction is. In this chemistry activity, students electroplate some wires in the lab. They research the application of electroplating in the real world.
Curated OER
How Soft or Hard is Your Water?
Learners test samples of water to determine how a chemical water softener affects water's ability to form suds. After collecting their data and analyzing their results, students answer follow-up questions about their lab.
Curated OER
This Stuff Makes Me Sick
High schoolers participate in a lab showing the effects of pesticides on Lumbriculus variegatus. Several extensions and variations are also included in this lesson including one which relates the experiment to how pesticides enter our...
Curated OER
Determining Liquid Densities
Students practice determining liquid densities in a short, hands-on lab activity. Students use a graduated cylinder to measure out 100 milliliters of a liquid, find its mass using a balance, and record measurements in a data table....
Curated OER
The Effects of the Calcium Ion on Cooked Dry Beans
Learners investigate the effects of calcium ions on the quality characteristics of cooked dry beans. In this calcium ion and dry bean investigation lesson plan, students soak dry beans using 2 different soaking techniques and 2 different...
Curated OER
Periodic Behavior of Oxides
Students investigate the properties of oxides and observe their periodic trends. For this behavior of oxides lesson plan, students experiment with metallic oxides and non-metallic oxides to determine if they are acid, basic or amphoteric...
Beyond Benign
SLS Toxicology Test
Ingredients in your shampoo are toxic enough to kill plants. The 16th installment of the series of 24 tests the toxicity level of various concentrations of SLS, a chemical found in nearly all shampoo. Learners prepare percent solutions...
Cornell University
Making a Battery
Don't be shocked when your class has a blast making their own batteries! Science scholars examine a dry cell battery, then design and construct a wet cell battery. The activity guides them through the parts of a battery, the variables...
Curated OER
Solubility Product of a Hydroxide
Students determine the solubility product constant and the concentration of a hydroxide. For this solubility product lesson plan, students use a solution of calcium hydroxide to neutralize a known concentration of hydrochloric acid. They...