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Building a Two-Choice Key for Local Species

Classifying Organisms and Dichotomous Keys

4th Grade·Science·Open Global Science

Updated 1 month ago · 5 views

Design and test a step-by-step dichotomous identification key using observable traits of local organisms.

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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

Comparing Microorganisms, Plants, and AnimalsUp next
Classifying Plants: Flowering versus Non-FloweringNot started yet
Classifying Animals: Vertebrates and InvertebratesNot started yet
Exploring Microorganisms: Bacteria, Fungi, and ProtistsNot started yet
Using Two-Choice Keys to Identify OrganismsNot started yet
Building a Two-Choice Key for Local SpeciesYou are here

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Learning standards covered

OGS.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.