Lab-Aids: Introduction and Use of Dichotomous Keys Kit

Lab-Aids SKU: LAB-51
Lab-Aids: Introduction and Use of Dichotomous Keys Kit - STEMfinity

Lab-Aids: Introduction and Use of Dichotomous Keys Kit

Lab-Aids SKU: LAB-51
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Lab-Aids: Introduction and Use of Dichotomous Keys Kit


Scientists use dichotomous, taxonomic, keys to identify both living organisms and non-living specimens. Examples of this would be a naturalist's use of a field guide or a chemists use of the periodic table. All dichotomous keys are developed the same way - similarities and differences in characteristics and traits are observed and recorded. Characteristics in dichotomous keys are typically given in pairs of opposing statements. The observer must make a choice as to which statement most accurately describes the specimen, since 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. This kit is complete for 30 students.
 
Scientific Concepts:
  • Teaches classification keys and their formats
  • Hones observation and reading skills
  • Good evaluation tool for literacy in science
  • Tests ability of students to apply knowledge

Content List:
  • 1 Teacher's Guide
  • 36 Student Worksheets and Guides
  • 30 Dichotomous Key Charts - Indented and Non-Indented Versions
  • 5 Sets containing 8specimen cards

Classroom Planning:
  • To complete this kit requires one ~50-minute class period.
  • Number of students: 36

 

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