Papier mache' can be a lot of fun. It can also be quite messy therefore adequate preparation is necessary. I have found that wheat paste, which I purchase from an online art supply catalog works best. I mix it in a blender to the consistancy of a milkshake. The 2nd best paste is flour and water, however it is a grainy texture and doesn't mix as well. The 3rd best is school glue thinned with water. It is more expensive and very sticky. On the positive side it dries without molding (in rainy or humid weather this can sometimes occur with the other pastes) and creates a smoother finish. I tear my newspaper strips longways into about 2" strips. Some will need to be torn even shorter when students are papier mache'-ing their extra shapes onto thier masks. If possible, use paper towels for the final layer. It covers the words and pictures on the newspaper making it easier to successfully apply the base layer of paint.
VoiceThread is a wonderful web-based application which allows users to share thoughts and comments on just about anything. Teachers may sign up for a free account which you may then allow students to access. If you have the funds you may sign up for a school account which is easier than the first option but is not free. Take a sneak peak and browse it for free- https://voicethread.com/?#q