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Animal Classification and Life Cycles

2nd Grade · Science · Open Global Science

9 lessons

Goal

Classify vertebrates into five major groups, contrast vertebrate traits with invertebrates, and model diverse animal life cycles.

9 lessons
0 of 9 done
  1. Vertebrates Versus Invertebrates: Backbone ClassificationUp next
  2. Fish: Gills, Fins, and Scales in Aquatic EnvironmentsNot started yet
  3. Amphibians: Dual Lives and MetamorphosisNot started yet
  4. Reptiles: Scaly Skin and Shelled Eggs on LandNot started yet
  5. Birds: Feathers, Beaks, and Hollow Bones for FlightYou are here
  6. Mammals: Fur, Live Birth, and Nursing YoungNot started yet
  7. Comparing Complete and Incomplete Insect MetamorphosisNot started yet
  8. Comparing Life Cycles of Mammals, Birds, and ReptilesNot started yet
  9. Sorting Animals with Yes-or-No QuestionsNot started yet
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Learning standards covered

GlobalOGS.3.LS.2Open Global Science Standards 2026™ · 2nd Grade

Observe, classify, and compare major groups of animals and other organisms (vertebrates including fish, amphibians, reptiles, birds, mammals; invertebrates; fungi; microorganisms) based on physical characteristics, habitats, life cycles, feeding methods, and behavioral adaptations.