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Classifying Organisms and Dichotomous Keys

4th Grade · Science · Open Global Science

6 lessons

Goal

Classify plants, animals, and microorganisms using structural traits and build dichotomous keys to identify diverse species.

6 lessons
0 of 6 done
  1. Comparing Microorganisms, Plants, and AnimalsUp next
  2. Classifying Plants: Flowering versus Non-FloweringNot started yet
  3. Classifying Animals: Vertebrates and InvertebratesNot started yet
  4. Exploring Microorganisms: Bacteria, Fungi, and ProtistsNot started yet
  5. Using Two-Choice Keys to Identify OrganismsYou are here
  6. Building a Two-Choice Key for Local SpeciesNot started yet
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Learning standards covered

GlobalOGS.5.LS.3Open Global Science Standards 2026™ · 4th Grade

Classify living organisms into major taxonomic groups (plants, animals, and microorganisms) based on observable structural characteristics, and construct and use dichotomous classification keys to identify, group, and name organisms from local and global environments.