adding images for Moodle and Canvas

for-teachers.md

@@ -12,6 +12,12 @@ These [full instructions](https://github.blog/2020-03-18-set-up-your-digital-cla
 
 This curriculum works well in these Learning Management Systems! Use the [Moodle upload file](/teaching-files/webdev-moodle.mbz) for the full content, or try the [Common Cartridge file](/teaching-files/webdev-common-cartridge.imscc) which contains some of the content. Moodle Cloud does not support full Common Cartridge exports, so it is preferable to use the Moodle download file which can be uploaded into Canvas. Please let us know how we can improve this experience.
 
+![Moodle](/teaching-files/moodle.png)
+> The curriculum in a Moodle classroom
+
+![Canvas](/teaching-files/canvas.png)
+> The curriculum in Canvas
+
 ## Using the repo as is
 
 If you would like to use this repo as it currently stands, without using GitHub Classroom, that can be done as well. You would need to communicate with your students which lesson to work through together.