LightMySky

Dinosaur Sizes

Compare dinosaur sizes to familiar things — some dinosaurs were as tall as a house, others were as small as a chicken — and understand that dinosaurs came in a huge range of sizes

No account needed. Progress saves in this browser.

What a learner can do afterwards

  • Compare the size of a large dinosaur to a familiar object like a bus or house
  • Name a very large dinosaur (e.g. Brachiosaurus) and a small one (e.g. Compsognathus)
  • Use words like 'taller than', 'longer than', 'heavier than' when comparing

1 · Read

Dinosaurs came in many sizes. Some were tiny. Some were huge, taller than a house.

Compsognathus1House6Brachiosaurus12
Brachiosaurus was taller than a house. Compsognathus was tiny, like a chicken.
Try it together

Mia stands by a Brachiosaurus skeleton. It is taller than her house! Then she sees a tiny Compsognathus. It is about as small as a chicken.

Good to know

Use words like taller than or heavier than. This helps you compare dinosaur sizes.

Dinosaurs ranged from house-sized giants to chicken-sized tinies.

2 · Watch

Take it off screen

Print a worksheetA4 with an answer key page for grown-ups. No screen, no internet.

Where it sits

Where this leads

Jobs that lean on this skill. Follow one to see everything it is built on.

Then practise

24 questions wait behind this lesson, each with its answer explained. Every answer feeds the sky: stars light as they are learned, and dim when it is time to come back.

Spotted a problem on this page? Tell us
Dinosaur Sizes · Science, ages 5 to 7 · LightMySky