https://www.cia.gov/library/publications/the-world-factbook/geos/cm.html

http://en.wikipedia.org/wiki/Cameroon

http://www.oswego.org/ocsd-web/games/spookyseq/spookycf5.html

http://www.oswego.org/ocsd-web/games/spookyseq/spookycf2.html

http://www.oswego.org/ocsd-web/games/spookyseq/spookycf10.html

http://www.oswego.org/ocsd-web/games/spookyseq/spookycb1.html

http://www.oswego.org/ocsd-web/games/spookyseq/spookycf5.html

http://www.oswego.org/ocsd-web/games/spookyseq/spookycb10.html

http://www.amathsdictionaryforkids.com/dictionary.html

http://www.mathplayground.com/index.html

http://www.bbc.co.uk/schools/wordsandpictures/clusters/blender/index.shtml

http://pbskids.org/lions/games/stacker.html

http://www.bbc.co.uk/schools/wordsandpictures/longvow/poems/fpoem.shtml