We have blogged on Fusing Glass with Middle Schoolers before:
http://2soulsisters.blogspot.com/2015/04/fusing-glass-with-middle-school.html 
http://2soulsisters.blogspot.com/2011/12/fused-glass-photo-frames-class-projects.html 
http://2soulsisters.blogspot.com/2015/07/fused-glass-ornaments.html
Directions:
Reference Snowman Art
Glass Co-efficient of 90
Glass supplies
Elmers Glue
Glass Kiln
Stringers
Frit
Kiln Wash
Scorer
Pliars
Watch video: I fuse at R3 
Plan ahead and get cracking on those Winter Art Lessons