To help you to complete some of the Mayan work we have added a few suggestions below
For 2 you will need to do a bit more investigation to find out about the gods. Then do the same as above creating a poster or booklet.
For 3, use the power point about the Mayans as it has information about the number system and also the writing.
For 4, again you can use the power point or do some more investigations. Then if you have bits and pieces at home make your own mask.
Anything you finish you could take a photo and email it.