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- Grade Range
- 5th
- Rating
Students, in groups, use basic science process skills to measure and compare the dissolved oxygen levels and pH levels of distilled, stream, and pond water. Full Review »
- Grade Range
- 6th
- Rating
Students design and conduct an experiment with milk to investigate how temperature affects bacteria growth. They, in groups, construct a hypothesis, perform the experiment and then record and present the results. Full Review »
- Grade Range
- 9th - 12th
- Rating
Students observe a demonstration in which a bottle containing a colorless solution is mixed, turns blue, then becomes colorless again. They record observations, form and discuss hypotheses, and draw a conclusion based on the evidence. Full Review »
- Grade Range
- Higher Ed
- Rating
Students grow E. coli strain HB101, which contains the plasmid pUCD607 with the bioluminescence (Lux+) gene. The plasmid containing the Lux+ gene is isolated from the E. coli, then characterized by restriction analysis. Full Review »
- Grade Range
- Higher Ed
- Rating
Students determine the best solvent system for separating a methylene blue/sodium fluorescein mixture by thin layer chromatography. They conduct an initial TLC separation using ethanol and a different solvent mixture and analyze the data of all trials to determine the best solvent. Full Review »
- Grade Range
- 8th - 12th
- Rating
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 been predisgested using two different restriction enzymes, and run on a gel electrophoresis apparatus, and the results are analyzed to determine which suspect committed the crime. Full Review »
- Grade Range
- 6th
- Rating
Students formulate a question about microorganisms that can be answered with an experiment. They develop a hypothesis for a questin about microorganisms based on observations and prior knowledge. Pupils carry out an investigation on microorganisms. Students display results in appropriate format (e.g., graphs, tables, diagrams). They prepare a written summary or conclusion to describe the results in terms of the hypothesis for the investigation on microorganisms. Full Review »
- Grade Range
- 9th - 12th
- Rating
Students explore what problems might occur if oxygen decreases in a body of water. They model what happens in a situation where decomposition is occurring. Students obtain, organize, graph, and interpret information. They i interpret results in terms of variables. Full Review »
- Grade Range
- 9th - 12th
- Rating
Students investigate the use of restriction enzymes to recognize a four-, six-, and eight-nucleotide sequence. They utilize restrictive endonucleases to cut Thymus DNA and compare results by viewing the DNA fragments on Agarose Gel Electrophoresis. Full Review »
- Grade Range
- 6th - 12th
- Rating
Students examine the following concepts: If water supplies contain materials which rot or decompose, oxygen is used. Decay and decomposition require vast supplies of oxygen. The use of oxygen for decay of wastes may be a life or death occurrence for organisms such as protozoa or fish. They need oxygen to live. Full Review »
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