Building a Model DNA
I've incorporated the basic idea into my own lab and I am planning to substitute paper clips for the pipe cleaners - after several years doing it with pipe cleaners I simply cannot bring myself to cut out all those little pieces again and then hear students complaining about how they don't hold together and so on...I'll update if there's a problem with the paper clips.
I've written about this lab before and other than the new lab sheets and paper clips, nothing new to add.
Pasta DNA Lab
UPDATE
I just completed this lab with my students and I need to make some revisions. I will try to get the lab sheets updated this weekend, but just in case I don't, be flexible when doing this lab. It's "mad tedious" after the first part, and I modified it on the fly. I have too much repetitious drawing and I need to add a text piece about how real DNA replicates, so students have a better basis for comparison. I'll also add more specific materials requirements, such as the number of pieces needed, etc. On the plus side, the paper clips worked just fine.
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