How to Build An Awesome T-rex?! - Science Boffins T-rex

Science Boffins T-rex!

How to Build Your Awesome T-rex?

1. Using the T-rex below to create your 3D optical illusion.

Use your T-rex key to make you dino!

2. Carefully cut out your T-Rex using safety scissors.

Cut out your T-rex

3. Have an adult help you for some of the trickier parts.

T-rex - careful cutting out

4. Now you have your T-Rex cut out you need to fold it. All folds are backwards away from the T-Rex except T6, T7 and T8.

5. Fold along all the dotted lines numbered F4, F5, F6 and fold tabs T1, T2, T3, T4, T5.

T-rex folder over

6. Next fold F1, F2 and F3 as illustration below and fold up T6, T7 and T8.

T Rex is nearly there!

7. Stick Tabs T2 and T4 to the base.

8. Stick tabs T1 and T5 behind T3

9. Gently bend the head downwards so that T7 can be stuck to the top of the jaw line (L1) and stick T6 to the front of the jaw line (L2).

10. Finally stick T8 to the back of your T-Rex’s head.

T-rex Head looking at you!
T-rex - folder over

You will notice that your T-Rex now only has eyes for you as it’s whole head will follow you around the room.

The science behind the task!

Because the T-Rex head is concave (it goes inwards) rather than convex (sticking out) like we expect, our brain cannot understand this. Our brain immediately alters the image we see to make the T-Rex 3D. As we change the way we view the T-Rex our brain is constantly making the adjustments, so the eyes are always following us.

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