Overwhelming Frustration

Once again I feel completely overwhelmed. I'm beginning to think a lot of what we are doing in this class is geared to high school if not college level classes. I seem to have a hard time getting my content and grade level to fit well within the guidelines.
For example, the examples in the paper about web design are all college level courses. I can see that math is even harder, and to try to tie it to younger kids (4th and 5th) is difficult.
As I was searching for link ideas I came across several other websites that seem to be doing exactly what I was planning on doing. I have a hard time creating something that I know already exists.
I'm also not sure how I can make interactive quizzes with immediate feedback - without being inside the setting of Moodle. In Moodle I've made quizzes, tests, assignments, journals, etc. But I'm not sure how to design/build a page on its own that has those features.
I still don't know what to podcast about, especially in conjunction with my web page. (I was hoping to design a page about area and perimeter, using both standard and nonstandard units and formulas.)
grr... I guess I'll call it a night for now. And start tomorrow with a fresh brain.