How to make a non-polluting car

LI: to find the most important (main) idea in a text

This week for reading we red a story called How to make a non-polluting car.We had to find the words that we didn't understand like revolution and historic another word for historic is history.Historic means like something important that happend in the pass.We had to answer questions like what kind of text is this and what's you evidence and The proof was that it shows us how to build a non-polluting car in steps.