The Manitoba Environmental Youth Network is a great source of information on teaching and promoting environmental issues.
They have an excellent section on Resources which describes how to go about fundraising and applying for grants, and gives great ideas for Take Action projects from a variety of organizations and websites such as Taking It Global, Climate Change Connection, and The Environmental Youth Alliance. Take a look at some of the tool kits from the G.O.A.L. Youth Capacity Workshop Series, like the one on Models of Youth Work.
The Manitoba Eco Network is also happy to host environmental and capacity-building workshops on a wide variety of themes in the classroom.