Student Resources http://technologystudent.com/ http://www.yenka.com/Yenka/Yenka_Products/ http://www.crocodile-clips.com/Our_Products/ http://www.discoverengineering.org/ http://jjjtrain.com/vms/index.html http://icrank.com/ http://www.howstuffworks.com/ http://joshmadison.com/software/convert/   Technical Reference Material http://www.ipenz.org.nz/ipenz/ http://engineering-tools.globalspec.com/TechLib/ http://www.efunda.com/home.cfm http://www.engineersedge.com/ http://www.mmsonline.com/