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Showing 1 to 15 of 181 results Save | Export
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Countryman, Lyn L.; Maroo, Jill D. – American Biology Teacher, 2015
Considerable anecdotal evidence indicates that some of the most difficult concepts that both high school and undergraduate elementary-education students struggle with are those surrounding evolutionary principles, especially speciation. It's no wonder that entry-level biology students are confused, when biologists have multiple definitions of…
Descriptors: Secondary School Science, College Science, Evolution, Scientific Principles
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Drits-Esser, Dina; Malone, Molly; Barber, Nicola C.; Stark, Louisa A. – American Biology Teacher, 2014
Epigenetics is the study of how external factors and internal cellular signals can lead to changes in the packaging and processing of DNA sequences, thereby altering the expression of genes and traits. Exploring the epigenome introduces students to environmental influences on our genes and the complexities of gene expression. A supplemental…
Descriptors: Genetics, Biology, Environmental Influences, High School Students
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Brewer, Michael S.; Gardner, Grant E. – American Biology Teacher, 2013
Teaching population genetics provides a bridge between genetics and evolution by using examples of the mechanisms that underlie changes in allele frequencies over time. Existing methods of teaching these concepts often rely on computer simulations or hand calculations, which distract students from the material and are problematic for those with…
Descriptors: Evolution, Teaching Methods, Scientific Concepts, Scientific Principles
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Marshall, Pamela A. – American Biology Teacher, 2013
Students need practice in proposing hypotheses, developing experiments that will test these hypotheses, and generating data that they will analyze to support or refute them. I describe a guided-inquiry activity based on the "tongue map" concept, appropriate for middle school and high school students.
Descriptors: Hypothesis Testing, Research Skills, Student Research, Science Experiments
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Heyborne, William – American Biology Teacher, 2013
The increase in "big box" stores over the past decade has provided a great source of specimens for use in teaching diversity in biology.
Descriptors: Biology, Science Instruction, Biodiversity, Instructional Materials
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Trautmann, Nancy M.; Makinster, James G.; Batek, Michael – American Biology Teacher, 2013
Using an interactive map-based PDF, students learn key concepts related to biodiversity while developing data-analysis and critical-thinking skills. The Bird Island lesson provides students with experience in translating geospatial data into bar graphs, then interpreting these graphs to compare biodiversity across ecoregions on a fictional island.…
Descriptors: Biodiversity, Critical Thinking, Thinking Skills, Data Analysis
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Dunlap, Dacey; Patrick, Patricia – American Biology Teacher, 2012
During this activity, by making beaded bracelets that represent the steps of translation, students simulate the creation of an amino acid chain. They are given an mRNA sequence that they translate into a corresponding polypeptide chain (beads). This activity focuses on the events and sites of translation. The activity provides students with a…
Descriptors: Biology, Science Instruction, Genetics, Instructional Materials
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Dean, Derek M. – American Biology Teacher, 2012
In this article, I describe an animated slideshow of Southern blotting that I have made freely available to other instructors. My hope is to provide a clear visualization of the logistics behind the technique so that instructors have a solid basis--as well as time freed up--to discuss its applications with students.
Descriptors: Molecular Biology, Science Instruction, Genetics, Visual Aids
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Hippensteel, Scott P. – American Biology Teacher, 2012
The primary decorative flooring tile in the Southpark Mall in Charlotte, North Carolina, is fossiliferous limestone that contains Jurassic ammonoids and belemnoids. Visible in these tiles are more than 500 ammonoids, many of which have been cross sectioned equatorially perpendicular to the plane of coiling. Upper-level undergraduate students from…
Descriptors: Biology, Paleontology, Science Instruction, College Science
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Tatina, Robert – American Biology Teacher, 2007
In this article, the author describes a simulation of a coevolutionary "arms race" and introduce a way of teaching it that lets students use the theory of natural selection to explain the outcomes of the simulation. The simulation uses the numerical cards from an UNO[R] playing card deck to represent the speeds of individuals in populations of…
Descriptors: Discussion, Simulation, Teaching Methods, Instructional Materials
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Audet, Richard H. – American Biology Teacher, 2006
In October 1981, an article appeared in "The American Biology Teacher" with the catchy title, "Bio-Bull." In it, author, Dale Carlson, described a powerful form of communication that he employed successfully in his community college classes. Each week students received what he called a "Bio-Bull" that included current biological topics,…
Descriptors: Biology, Science Instruction, Teaching Methods, Teacher Student Relationship
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Baker, William P.; Jones, Carleton Buck – American Biology Teacher, 2006
Teaching methods of genetic analysis such as fluorescence in situ hybridization (FISH) can be an important part of instructional units in biology, microbiology, and biotechnology. Experience, however, indicates that these topics are difficult for many students. The authors of this article describe how they created an activity that effectively…
Descriptors: Genetics, Teaching Methods, Science Instruction, Science Activities
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Atkins, Thomas; Roderick, Joyce – American Biology Teacher, 2006
In order for students to understand genetics and evolution, they must first understand the structure of the DNA molecule. The function of DNA proceeds from its unique structure, a structure beautifully adapted for information storage, transcription, translation into amino acid sequences, replication, and time travel. The activity described in this…
Descriptors: Demonstrations (Educational), Science Instruction, Genetics, Hands on Science
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Barden-Gabbei, Laura M. – American Biology Teacher, 2006
The overhead projector is an excellent tool for teachers at both the high school and college level. Teachers often use it to display class notes as they monitor students' actions and reactions to the concepts being presented and discussed, to display diagrams and figures too complex to draw on the chalkboard, and more recently to display computer…
Descriptors: Projection Equipment, Cytology, Science Instruction, Demonstrations (Educational)
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Shonk, Kevin – American Biology Teacher, 2006
In these days of increasing concern for the state of the environment and declining biodiversity, it is important that students and teachers come to appreciate the value of life in all its forms. Natural history provides students with an opportunity to understand better how life on the planet interacts, as well as the place and responsibility of…
Descriptors: Animals, Ornithology, Computers, Guides
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