For the first one: https://gist.github.com/1978511
For the second one, I never figured out how to properly align divs using CSS, myabe someone can help?
Okay, this one's not going to be about teaching, it's about doing. Take the HTML example from the Groovy Sass task and rewrite it using Haml. Post a link to your blog or a gist or wherever you like to host code snippets here showing your work.
Then, for bonus points, rewrite that example to use divs instead of a table. If you haven't written table-less tables before, consider this a necessary task. Post a link somewhere for others to see your work and comment.