What I have learnt today

Roller-coaster

3D modelling

Today i have learnt that in 3D modelling you can create different types of roller-coasters and if you go wrong in making your roller-coater on the computer you can just start again or just change some of it but if you just start making it and you made a mistake you would have to start again.

Example

We had to go on a website to show us how to make a roller-coaster and you have to get 50 points t finish a level.