The United Nations Association in Canada (UNAC) endeavours to “work closely with the educational communities in every province and territory to build their capacity to educate young people from a global perspective.” In order to achieve this objective, UNAC has created a number of online teaching resources accessible via their website. Teaching modules cover everything from sustainable development and anti-racism to HIV/AIDS and human rights. Most content is also available in French.
Check out the UNA-Canada teaching resources here.
There are an amazing supply of great Model United Nations tips and materials for teachers and students at Best Delegate. Best Delegate organizes training programs for teachers and students, in addition to having the largest archived set of resources online.