Dinosaur Hip Groups

ScienceDinosaurs & PaleontologyAges 9–11

Classify dinosaurs into the two major groups based on hip structure: Saurischia (lizard-hipped, including theropods and sauropods) and Ornithischia (bird-hipped, including Triceratops and Stegosaurus)

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Teaching Table

Set out your lesson

Use the traditional dinosaur hip groups without confusing their names with bird ancestry.

Activity

Follow this model in an accessible mode before attempting independent work. Graph ordering is not learner mastery; revisit prerequisites if the guided task still needs full modeling.

Policy

Check readiness rather than assuming source graph order establishes attainment.

Use classification cards. The grouping is a traditional teaching model; dinosaur relationships are an active research area. Open Show (S), then Guided (G), then Try (T). Hide earlier work and keys before Try. Use only the supplied stage material; do not invent additional cards. Pause or split the session if needed.

Materials are ready in each step. Use them on screen or print just the current step. Put teaching examples aside before the learner tries.

What this lesson covers and its limits

These are bounded opportunities, not learner attainment. Partial and blocked source requirements remain so.

partial: Classify dinosaurs into the two major groups based on hip structure: Saurischia (lizard-hipped, including theropods and sauropods) and Ornithischia (bird-hipped, including Triceratops and Stegosaurus)
Recall of classification; structural hip-bone identification requires a verified anatomical diagram and remains partial.
partial: Name the two major dinosaur groups: Saurischia and Ornithischia
Recall of classification; structural hip-bone identification requires a verified anatomical diagram and remains partial.
partial: Explain the difference is based on hip bone structure (lizard-hipped vs bird-hipped)
Recall of classification; structural hip-bone identification requires a verified anatomical diagram and remains partial.
partial: Correctly classify at least two dinosaurs into each group (e.g. T. rex = Saurischia, Triceratops = Ornithischia)
Recall of classification; structural hip-bone identification requires a verified anatomical diagram and remains partial.
partial: Can {{name}} explain that scientists divide dinosaurs into two big groups based on their hip bones — and tell you which group includes T. rex?
Recall of classification; structural hip-bone identification requires a verified anatomical diagram and remains partial.

Recall of classification; structural hip-bone identification requires a verified anatomical diagram and remains partial.

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Use the traditional dinosaur hip groups without confusing their names with bird ancestry.

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Check understanding

Name the two major dinosaur groups: Saurischia and Ornithischia
Explain the difference is based on hip bone structure (lizard-hipped vs bird-hipped)
Correctly classify at least two dinosaurs into each group (e.g. T. rex = Saurischia, Triceratops = Ornithischia)

“Can your child explain that scientists divide dinosaurs into two big groups based on their hip bones — and tell you which group includes T. rex?”

Curriculum record

Type: Conceptual
Subject: Science
Domain: Dinosaurs & Paleontology
Age range: Ages 9–11