Curated OER
Identification of Positive Streptococci
After being introduced to the genus Straptococcus, biology buffs set up agar plates, esculin slants, and salt broth tubes with different species to test. The level of laboratory skills required to perform this activity makes it most...
Curated OER
Science Lessons
Tenth graders research about the different cell organelles. For this series of biology lessons, 10th graders compare two allotropes of carbon. They investigate how the rate of reaction is affected by concentration.
Curated OER
Test-Tube Tissues
In this tissues instructional activity, students read about a new treatment for fixing bone fractures. Students complete 4 short answer questions.
Curated OER
A Simulation of the Spread of HIV
Learners participate in a simulation to illustrate the spread of HIV. They use phenolphthalein, water and test tubes to simulate the spread of the virus and discuss results and variables after the activity.
Curated OER
Crustal Sinking
Students measure the rate of sinking of a test tube into a beaker of "glop", representing a model of the interaction between the Earth's crust and upper mantle. This task assesses students' abilities to make simple observations,...
Curated OER
How Effective is Perspiration at Cooling?
Students collect data on the cooling of water in two different test tubes, one that is wrapped in wet newspaper and one in dry newspaper. They then relate this cooling effect to the body's perspiration.
Curated OER
Chemistry: Acids and Alkalis
Young scholars identify substances that are acids and alkalis. In this acids and alkalis lesson, students conduct tests to determine if given substances are acids or alkalis. They test substances and explain the different qualities that...
Curated OER
Cool Chemistry- DIY pH Indicator
Young scholars study the differences between an acid and a base. In this pH lesson students view a demonstration then test chemicals in groups.
Royal Society of Chemistry
A Reversible Reaction of Hydrated Copper (II) Sulfate
How can removing water change the color of a substance? Lab partners remove the water of crystallization from hydrated copper (II) sulfate, record their observations, then rehydrate the solid. The resource is printable and contains ideas...
NASA
Rocket Wind Tunnel
Using a teacher-built wind tunnel constructed from a paper concrete tube form, a fan, and a balance, individuals determine the amount of drag their rocket design will experience in flight. Pupils make modifications to increase the...
Polar Trec
Can Carbon Dioxide Act Like a Greenhouse Gas?
Ninety-seven percent of scientists who study climate agree that human activity is warming the planet. Learners explore carbon dioxide as a greenhouse gas, a gas causing this warming, through a hands-on experiment. Once complete, they...
Nuffield Foundation
Measuring the Vitamin C Content of Foods and Fruit Juices
Are you getting enough vitamin C? Young scientists determine the amount of vitamin C in fruit juice samples. They accomplish this task by adding DCPIP solution to the samples until the blue color of the DCPIP persists. Once this happens,...
Curated OER
Energy
Wow! Colorful and simple, these 160 slides introduce the various forms of energy, along with a relevant image. Some of the images are animations, which help beginning physical scientists to visualize the flow of electrons or energy! This...
Teach Engineering
Making Model Microfluidic Devices Using JELL-O
Nothing flows like J-E-L-L-O! In the final portion of a four-part series, pupils create scale models of microfluidic devices out of gelatin and bendable straws. They use their devices to test various flow rates in the delivery of...
DiscoverE
Tape Dispenser Challenge
Help your class get out of a sticky situation! Future engineers explore existing tape dispensers and then design a new system for dispensing tape. To put these systems to the test, they build and evaluate prototypes of their designs.
Virginia Department of Education
The Effects of Heat and Acid on the Enzyme Catalase
How quickly do enzymatic reactions occur? Assist the class as they examine heat and pH change to determine the rate of chemical reactions using catalase as an enzyme. Watch them "glow" with excitement!
Curated OER
Water Power
Learners explore how a water turbine operates and observe the principles of the water turbine. They account for the speed of the water turbine by various experiments and records of test results. In groups the students create a working...
Curated OER
How To Make Yeast Cells Thrive
Students set up and run the experiments they designed in the lesson, 'Population Growth in Yeasts,' using simple yeast-molasses cultures in test tubes. They demonstrate understanding that several environmental factors can contribute to...
Curated OER
Cell Energy - Bubbling Yeast
Students identify that yeast are a single celled fungi that are a great model organism for studying respiration in the classroom. They also fill the bulb of a disposable pipet (eyedropper) with yeast, then submerge the pipet in a test...
Curated OER
Science: Pigments and Photosynthesis
Students explore the process of photosynthesis by identifying chloroplasts and chlorophyll pigments. In a demonstration, they observe a demonstration connecting pigments with sunlight conversion into energy. Using paper chromatography,...
LABScI
Conservation of Momentum: Marble Collisions
What happens to the momentum of an object when it strikes another object? Scholars roll a marble down a ramp so it collides with another marble. By measuring the speed of each marble before and after the collision, pupils answer this...
Nuffield Foundation
Investigating Factors Affecting the Breathing Rate of a Locust
Do animals breathe faster when given more oxygen or more carbon dioxide? Young scientists observe the respiration rates of locusts under a variety of gas concentrations to answer that very question. They collect data, analyze the...
Cornell University
Electromagnets
Discover the connection between electric current and magnets. Scholars create electromagnets by passing a magnet through a coil. They experiment with different materials to determine the variables that affect the strength of the current.
Biology Junction
Water, Solutions, pH, and Buffers
What common chemical includes safety warnings for being harmful if swallowed or inhaled, causes serious eye damage, and needs to be cleaned up immediately if spilled on the floor? Surprisingly, the dangerous chemical turns out to be...