The short answer is no - it won't.
Teaching jobs in general are difficult to obtain since Canada has more teachers than jobs. If you take an early childhood diploma course - this won't allow you to work in most schools and you'll most likely end up with a daycare job (which don't pay that well). If you want to teach in an actual school (e.g. public elementary school), you'll need to be certified as a teacher in the province where you will be living. To do that, you typically need to complete at least a three year university degree and then typically an additional one year teachers education program.