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Aseptic Technique
In this microbiology worksheet, students complete 7 conclusions questions about the aseptic technique they performed in a group lab.
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Throat Culture
For this biology worksheet, learners review the procedures used to complete the lab activity and then examine the purpose and add the information while answering the questions.
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Identification of Gram Negative Bacilli
In this biology worksheet, students review the procedures used to complete the lab activity and then examine the purpose and add the information while answering the questions.
Creative Chemistry
A Test-Tube Study of Redox Reactions
Your chemistry class set up six different redox reactions in the lab. Inquisitors methodically test each one and eventually order them according to oxidizing strength. This is a neat way to have the learners perform more than one...
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LP 6--8: Xenopus laevis (frog) Development for a 7th Grade Audience
Seventh graders view lab stations with Xenopus at different stages of development. They identify the life stage of the sample, as well as the previous and next stages. Students must explain their reason for selecting the specific stage.
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Target Earth
Space scientists use water displacement to determine the mass of a cubic centimeter mini meteorite, and then use it as a small-scale representative of an asteroid. They figure out the orbital velocity of an asteroid. Then they use a...
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Evolution
Explore the concept of evolution and cell biology; your class can work in groups to use the internet to view websites on evolution, take a quiz, and complete a lab activity.
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Simple Tensile Testing of Polymeric Films and Sheeting
Chemistry classes pretend to be consultants to a grocery story trying to decide what polymer to use for therir new non-paper bags. They prepare tensile bars and use them to test plastic film samples for strength and stretchability. Both...
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# 12 Using Bottled Water as a Problem Solving Exercise in Chemical Identification
Students work in groups of two or three, groups are given four unidentified bottled waters in unmarked containers and the chemical characteristics taken from the label on the bottled waters. They devise and carry out a plan to match the...
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Bloodstain Pattern Simulations: A Physical Analysis
Students receive bloodstain pattern evidence from a crime scene. They answer a series of questions through inquiry, observation, measurement, and analysis. Pupils complete this challenge, by reconstructing the evidence through four...
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#24 How Much Air Is In Foamed Polystyrene Products?
Students are challenged to come up with a good estimate of the amount of air in foamed polystyrene products. They use this gas evolution experiment and as such have students measure the gas generated when foamed polystyrene is degassed...
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Sizing Cells
Students examine how living cells reproduce to make new cells. In this cell reproduction lesson students complete a lab activity and answer questions.
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CELL TRANSFORMATION IN TOBACCO LEAF DISKS
Students work with whole plant material and are not required to measure small quantities, yet they can see evidence of transformed plant cells (plant cells that have genes from bacterial plasmids). This is a laboratory suitable for...
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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...
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Fatty Acids For Soap Making
Students titrate a sample of fatty acids with standardized sodium hydroxide solution. From the amount of base needed for neutralization and the mass of sample used for titration, the apparent average molar mass of the sample is...
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#21 Films, Fibers, and Solubility
Students are introduced to how the differences in solubility of materials are used in the manufacture of fibers and films. They are also introduced to the various processes used to make films and fibers. Pupils prepare fibers using wet...
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What Is Special About Polyethylene Food Storage Bags?
Students 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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# 03 Laboratory Ventilation and Risk Assessment Exercise
Students are introduced to the analysis of health risks in the laboratory, particularly from vapors from organic solvents. They consider quantitative measure of risk such as threshold limit values (TLVs), the amount of the compound that...
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Estimating Errors in Chemistry
Estimating Errors in Chemistry is a detailed handout that illustrates the importance of calculating the percent error when working in the chemistry lab. There are no actual problems to solve, just notes and examples of calculations. Hand...
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Lab Experiences: The cookbook Translator
Students preview a copy of the lab experience and "cookbook translator" prior to the actual lab experience. They participate in the lab experience and complete the "cookbook translator" for evaluation at the completion of the laboratory...
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Lab Report Template
Students write a paragraph (complete sentences) which explains what they did in the lab.
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Water Ecology Lab
Students determine the characteristics of a stream ecosystem and its organisms. In this water ecology lesson students complete several labs that shows them presence of life, water appearance, and water flow.
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Soil Sample Lab
Learners test the pH of soil samples they collected from the field trip. In this chemistry lesson, students differentiate acids and bases. They write a lab report about the experiment.
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Chemistry Lab: Solubility Product Constant of Sodium Chloride
In this solubility product constant of sodium chloride instructional activity, students gather the equipment needed and follow the procedures to determine the solubility product constant of a solute and demonstrate precipitation of a...