Both of these lessons are through Khan Academy which you are able to login for free and track your progress. Please email me when you have completed the lessons at voelknt@dearbornschools.org or respond on the blog.

https://www.khanacademy.org/humanities/music/music-basics2/notes-rhythm/v/lesson-1-note-values-duration-and-time-signatures

https://www.khanacademy.org/humanities/music/music-basics2/notes-rhythm/v/lesson-2-rhythm-dotted-notes-ties-and-rests