The Center for Global Development in the U.S. has a collection of resources available for educators. On their website you can find syllabuses and prepared Powerpoint style slides. The topics vary but include aid effectiveness, climate change, global health, and more. As some of the content comes from colleges and universities, this is a great resource if you are looking to explore advanced issues in development.
Additionally, the website has pages-upon-pages of publications that are great for personal learning and briefing, as well as multimedia productions for those who prefer to learn by audio and video.
Check out the rest of the website for interactive data sets like this one that show’s countries commitments to development,