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Young, Linda Mull; Motz, Vicki Abrams – American Biology Teacher, 2013
We outline protocols for producing slant-minis (SLINIs) and mini-deeps (MEEPs) and examples of their use in simple microbiology experiments suitable for high school students. The principal benefits of these protocols are decreased cost associated with significantly reduced media use; easier, less expensive disposal of waste; and increased safety…
Descriptors: Microbiology, High School Students, Science Experiments, Scientific Methodology
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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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Harley, Suzanne M. – American Biology Teacher, 2013
In many labs on photosynthesis, the presence of starch in leaves is used as an indirect indicator of photosynthetic activity. Students do starch tests on leaves from plants that have been kept under a variety of conditions in order to check parameters for photosynthesis. The starch test can also be used to enable students to discover differences…
Descriptors: Botany, Plants (Botany), Science Activities, Science Experiments
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Dou, Remy; Hogan, DaNel; Kossover, Mark; Spuck, Timothy; Young, Sarah – American Biology Teacher, 2013
Diffusion has often been taught in science courses as one of the primary ways by which molecules travel, particularly within organisms. For years, classroom teachers have used the same common demonstrations to illustrate this concept (e.g., placing drops of food coloring in a beaker of water). Most of the time, the main contributor to the motion…
Descriptors: Physics, Science Instruction, Science Experiments, Motion
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Adler, Jacob J.; Judd, Mariah V.; Bringman, Lauren R.; Wells, Clark D.; Marrs, Kathleen A. – American Biology Teacher, 2013
We developed an interactive laboratory that allows students to identify and grade tissue samples from human breast biopsies, using techniques similar to those used by actual pathologists. This unique lab develops a practical and intellectual understanding of basic tissue structures that make up living systems, utilizing technology to bring…
Descriptors: Pathology, Science Instruction, Cancer, Laboratory Experiments
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Pavlova, Iglika V.; Lewis, Kayla C. – American Biology Teacher, 2013
Science is a complex process, and we must not teach our students overly simplified versions of "the" scientific method. We propose that students can uncover the complex realities of scientific thinking by exploring the similarities and differences between solving the familiar crossword puzzles and scientific "puzzles."…
Descriptors: Science Instruction, Biology, Teaching Methods, Puzzles
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Brown, Julie C. – American Biology Teacher, 2013
In this two-part activity, high school biology students examine human karyotyping, sex-chromosome-linked disorders, and the relationship between biological sex and gender. Through interactive simulations and a structured discussion lab, students create a human karyotype and diagnose chromosomal disorders in hypothetical patients, as well as…
Descriptors: Genetics, Controversial Issues (Course Content), High School Students, Biology
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Bakke, Leanne; Kieke, Michele C.; Krueger, Robert – American Biology Teacher, 2013
In daily life, students are allowed to use words such as "more," "some," or "increase-decrease" to describe the relationship between two events. In science, concise description is necessary, which requires the contribution of math. In the summer component of the Science Research Institute program, students integrated…
Descriptors: Research Projects, Student Research, Inquiry, Biology
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Priano, Christine – American Biology Teacher, 2013
This model-building activity provides a quick, visual, hands-on tool that allows students to examine more carefully the cloverleaf structure of a typical tRNA molecule. When used as a supplement to lessons that involve gene expression, this exercise reinforces several concepts in molecular genetics, including nucleotide base-pairing rules, the…
Descriptors: Genetics, Hands on Science, Science Activities, Scientific Concepts
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Walsh, Joseph A. – American Biology Teacher, 2013
Obesity is the costliest preventable health problem in the United States. Understanding and applying the first law of thermodynamics will help students prevent and treat this all-too-common problem.
Descriptors: Obesity, Thermodynamics, Secondary School Students, Metabolism
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Pavlova, Iglika V.; Kreher, Scott A. – American Biology Teacher, 2013
Genetics, one of the most influential fields, underlies all of biology and produces discoveries that are in the news daily. However, many students leave introductory biology and genetics courses lacking a coherent framework of knowledge to use in their daily lives. We identify substantial "missing links" in the teaching of foundational…
Descriptors: Genetics, Science Instruction, Scientific Concepts, Teaching Methods
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May, S. Randolph; Cook, David L.; May, Marilyn K. – American Biology Teacher, 2013
Biology courses have thousands of words to learn in order to intelligently discuss the subject and take tests over the material. Biological fluency is an important goal for students, and practical methods based on constructivist pedagogies can be employed to promote it. We present a method in which pairs of students write dialogues from…
Descriptors: Biology, Science Instruction, Cooperative Learning, Dialogs (Language)
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Taylor, D. Leland; Campbell, A. Malcolm; Heyer, Laurie J. – American Biology Teacher, 2013
Next-generation sequencing technologies have greatly reduced the cost of sequencing genomes. With the current sequencing technology, a genome is broken into fragments and sequenced, producing millions of "reads." A computer algorithm pieces these reads together in the genome assembly process. PHAST is a set of online modules…
Descriptors: Biology, Information Science, Genetics, Educational Technology
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May, S. Randolph – American Biology Teacher, 2013
An algorithm has been developed for the rapid determination of single-gene inheritance patterns from genetic pedigrees.
Descriptors: Genetics, Mathematics, Biology, College Science
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Woody, Scott; Himelblau, Ed – American Biology Teacher, 2013
We present a collection of analogies that are intended to help students better understand the foreign and often nuanced vocabulary of the genetics curriculum. Why is it called the "wild type"? What is the difference between a locus, a gene, and an allele? What is the functional (versus a rule-based) distinction between dominant and…
Descriptors: Science Instruction, Genetics, Logical Thinking, Elementary School Science
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