This project was created last year with all the 7th grade studentson the school I teach, according to the Portuguese 7th grade Natural Sciences curriculum. I have chosen the NGSS standard that aligns with our Essential Learnings for 7th grade Natural Sciences, but feel free do adapt as needed.This project can be done across multiple classes and serves as a bridge between Maths (scales), Earth Sciences (Geologic Time) and History (Human Time). It's also a great way of involving the students in co