Slide Projector

fresh food vs. canned food
http://www.oppapers.com/essays/Fresh-Food-Vs-Canned-Food/354886

comparison and contrast

http://www.eslbee.com/comparison_contrast_essays_models.htm

comparing winter and summer
http://www.oppapers.com/essays/Differences-Between-Summer-And-Winter/696519

http://www.oppapers.com/essays/Summer-Vs-Winter/499377

http://www.oppapers.com/essays/Comparison-Between-Pop-Music-And-Classical/372615

Fresh food or Canned food
http://www.eslbee.com/contrast_eating_fresh_or_canned_foods.htm

writing.itu.edu.tr/cc4.pdf

Classical vs. Popular Music

http://www.davidvanalstyne.com/pg-classicvspop.html