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# 15 A Search for Automated Plastics Recycling Separation
Students are challenged to investigate the physical and chemical properties of plastics and use them to design a system that could be used to separate them. 1st year chemistry students use density for separation, students gathered...
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# 05 Color Me Analytical
Students are introduced to colorimeter on two levels. They investigate how to physically manipulate the colorimeters. Secondly, the students start on a pathway of discovery to one of the most important principles in analytical chemistry:...
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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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Water and Polymers
Learners conduct qualitative and quantitative investigations based on the interaction between water and various polymers. They determine the percent moisture contained in various plastics along with a qualitative procedure to determine...
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The Study of Molecular Orientation by Linear Dimension Change of Polymeric Films
Students investigate the linear dimension change of heated plastic film and relate the results to processing and service use of the materials. They calculate percent change in dimension as related to anisotropy and molecular reorientation.
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Determination of Plasticizer in PVC
Students isolate and determine the amount of plasticizer in polyvinyl chloride. They use Infrared Spectroscopy (IR) or Fourier Transform Infrared Spectroscopy (FTIR) and gravimetric techniques in this experiment.
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DNA on Stick
Students experience a "hands-on" activity to get visual evidence of the physical nature of DNA and the process of DNA purification. They explore one method of chromosomal DNA isolation and DNA extraction.
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Determination of Phosphorus Content in River Water
Divide your chemistry or environmental science class into two groups. Each group tests water samples from a river for the concentration of phosphorus using a different method. With chemists, you can use this activity as they learn to use...
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Innocent or Guilty: A Lab on DNA Gel Electrophoresis
Students use the prelab as an introduction to the importance of DNA fingerprinting- a form of identification that us being accepted by both scientific and leagl experts. They prepare a gel for electrophoresis. DNA fragments, which have...
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# 02 The Aspirin Shelf-Life Scenario
Students work for a company that produces acetylaslicylic acid, aspirin. They have been assigned the task of determining if different packaging materials and/or environmental storage procedures can increase the shelf-life of the product.
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# 21 Measuring Nitrate by Cadmium Reduction
Students design an experiment to evaluate the effects of various treatments on the nitrogen cycle in a freshwater aquarium. They are required to maintain a laboratory notebook of all work, measure the key analytes of the biosystem at...
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Using Plant Pigments to Link a Suspect to a Crime
Learners use chromatography to separate plant pigments collected from a fictitious crime scene and suspects. They compare the Rf values of the plant pigments to determine whether the plant pigments found on any of the suspects match the...
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Genetic Engineering/Biotechnology
Students create a paper model of a plasmid and insert a DNA molecule that contains a specific gene into the plasmid. They complete an actual transformation involving E. coli bacterium and relate the two activities to one another.
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Diffusion & Osmosis with Data Analysis
Students explore principles governing diffusion and osmosis. Students perform a dialysis tubing experiment. They obtain core samples of potato in varying concentrations of sugar-water to measure water potential of the potato cells....
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Types of Chemical Reactions
High schoolers conduct labs to gain an overview of chemical reactions. They observe examples of synthesis, decomposition, single displacement and double displacement reactions. They identify certain products by the use of litmus and...
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How Can We Calculate an Equilibrium Constant?
Students explain how equilibrium quantities are changed by temperature, pressure or different concentration of substances. They work together to complete equilibrium equations. They identify the relationship between absorption of light...
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Gene Regulation Mechanisms
Students explore the control of expression of DNA into proteins which is divided into two main categories: transcriptional and post-transcriptional. They construct examples of the control mechanisms and discuss disease processes that...
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Phytoremediation
Students participate in a lab designed to facilitate the clean up and remove of substances ranging from heavy metals to dynamite. They focus on the remediation of copper. They discuss their results of this open ended inquiry experiment.
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Gene Regulation Mechanisms
Students explore genetics. They discuss how chromosomes and/or genes are regulated during the life of an organism. In a lab setting, students compare and contrast the genomic regulation of prokaryotic and eukaryotic cells using...
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Wait, They Can do it by Themselves?
Students recognize the concepts of evolution and natural selection as well as cladistics and phylogenetics. They observe the process of regeneration in a sea anemone to simulate asexual reproduction.
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Liquids and Solids
Students describe the properties of solids and liquids, and explain how a semiconductor works. In this atom lesson plan students demonstrate the bonding properties of carbon and silicon.
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Introduction to the Mole
Students are introduced to the mole concept using a discovery-based method. Lesson includes activities with candy that allow students to discover the rules for mole-item, item-mole, mole-mass, and mass-mole conversions.
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Planting a Xeriscape Garden
Fourth graders use a plant database to discover new vocabulary associated with plants and ecosystems. Using a pile of dirt behind their school, they design a garden to make it a more enjoyable place. They print out the types of plants...
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The Nature of Science and Technology
Second graders perform a variety of experiments to observe, form conclusions, and make inferences. In this experiment lesson, 2nd graders experiment based on the result of a pre-assessment. Students share what they have learned.
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