Once you have finished posting to your blog (the video, not the link to the video), you must leave a comment on the bottom of this post letting me know that you have successfully completed your challenge!
Make sure you put an appropriate title on you post and also label your post: volume, video, how to
Remember: You are to post this video on YOUR blog, and leave a comment on this very post!!
If you are unsure of how to post a youtube video to your blog, see the instructions on the post below titled "Volume of a Cylinder" - not Meaghan's post, but mine a little farther down.