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You are here: > New Teaching Methods > Science Teaching Methods and Resources > INTRODUCTION TO DICHOTOMOUS KEYS KIT. |
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INTRODUCTION TO DICHOTOMOUS KEYS KIT.
ITEM #: KIT-14116
PRICE: $41.95
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| Resource Description
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| INTRODUCTION TO DICHOTOMOUS KEYS. Lab-aids. Scientists use dichotomous, or taxonomic, keys to identify both living organisms and non-living specimens. Examples of this include a naturalist’s use of a field guide and a chemist’s use of the periodic table. All dichotomous keys are developed the same way—similarities and differences in characteristics and traits are observed and recorded. Similar to the way computers work (open/closed circuit), characteristics in dichotomous keys are typically given in pairs. The observer must make a choice as to which statement most accurately describes the specimen, since only one statement in each pair can be true. The statement chosen determines the next pair of opposing statements. Statement pairs become increasingly more specific until the specimen is identified. In this game-like activity, students focus on the physical attributes of an imaginary organism. Students identify the specimen and draw two organisms that match the organism’s description. Materials for 30 students, grades 6-12. #KIT-14116.
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