AI Tutor

Premium Lesson

Upgrade to unlock this lesson, practice questions, and your personal tutor.

This lesson is part of a track

Public learning track

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 FlightNot started yet
  6. Mammals: Fur, Live Birth, and Nursing YoungNot started yet
  7. Comparing Complete and Incomplete Insect MetamorphosisYou are here
  8. Comparing Life Cycles of Mammals, Birds, and ReptilesNot started yet
  9. Sorting Animals with Yes-or-No QuestionsNot started yet
View full track

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.

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

Record, sort, organize, analyze, and represent scientific data and observations using tables, drawings, symbols, words, numbers, and simple graphs, identifying patterns, cause-and-effect relationships, and mathematical comparisons between objects.