Science FennsK to 5

Brush the dust away. Wake them up.

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0 of 5 awake

Science Fenns · Dinosaurs

Dinosaurs

Giants are asleep in the rock. Wake them up. Step through the window. Rebuild their bones. Spend a day beside them.

Deep time

How long ago?

Slide the gold dot back through time. See who was alive.

Jurassic
Cretaceous
After the big dinosaurs
The age of the big dinosaurs ended about here.
15010050Today

About 150 million years ago

T. rex lived closer to you than to Stegosaurus.

83 million years

From Stegosaurus to T. rex.

67 million years

From T. rex to you.

Spot them

Three of these were not dinosaurs.

Tap the three. They lived at the same time as dinosaurs. Some of them shared the sky and the sea.

The bone room

Build a fossil.

Real fossils come out of the ground in pieces. Scientists put them back together, one piece at a time. Now you try.

How many pieces?

Side by side

How big were they?

Each bar shows how long the animal was. The Pteranodon bar shows how wide its wings spread.

  • You, in fourth gradeabout 4.5 feet
  • Velociraptorabout 6 feet
  • Pteranodon, wings spreadabout 20 feet
  • Ankylosaurusabout 22 feet
  • Stegosaurusabout 30 feet
  • Triceratopsabout 30 feet
  • Maiasauraabout 30 feet
  • Elasmosaurusabout 34 feet
  • A school busabout 35 feet
  • Tyrannosaurus rexabout 40 feet
  • Mosasaurusabout 40 feet
  • Spinosaurusabout 45 feet

These are good guesses from fossils. Scientists measure, and then they measure again.

How many of you does it take?

Pick one. Your whole class lies down head to toe. Count.

A day with it

Spend a day with Triceratops.

Slide the sun across the sky. Nobody was there to watch, so scientists use bones, teeth and footprints to make good guesses.

The creature in its world

Just for fun

Which one are you?

Five questions. No wrong answers.

Field Journal

Your stamps.

Wake a creature. Meet it. Rebuild its bones. Each one earns a stamp. This journal only lasts while this page is open, so print your certificate before you go.

0 of 0 stamps

    • Traveled through time
    • Spotted the not-dinosaurs
    • Lined up your class
    • Spent a day
    • Found your dinosaur

    Earn 15 more stamps to unlock your certificate.

    Journal