This week, I am defaulting to a bad habit I have developed on Facebook. When I don’t have anything particularly interesting to post (which happens quite often) I do what many of my friends do – I post about my kids. For this blog, I’ll reference my ‘big kids’ (meant as a term of endearment rather than a diminutive), my students in Cell and Molecular Biology. I just finished grading Assignment 5, which contains one of my favorite pieces of the year. The subject is DNA replication, which can be conceptually challenging. How do the leading and lagging strands, which are oriented in opposite directions and must replicate in a specific direction (5′ to 3′) replicate simultaneously while the replication fork moves unidirectionally? And where do all those players fit in? DNA polymerase I, DNA polymerase III, topoisomerase, single stranded binding proteins, helicase?
I’ve always found that no matter which textbook I’ve adopted, only a subset of my students “get” DNA replication by looking at the figure in the textbook. I would provide figures from three or four different textbooks, and that helped a little. In recent years, YouTube offered some nice animations. But there were always students, quite a few, who still could not conceptualize DNA replication. Most science teachers employ metaphors. The human genome is the “book of life”, for example. After considerable frustration in trying to come up with the best metaphor for DNA replication for my students, it finally dawned on me. DUH! Let the students make their own metaphors.
Here is where I step aside and let the work of my big kids speak for itself:
And just so my ‘little kids’ don’t feel left out, here’s a recent Facebook post about them. Just when I thought they had outgrown the kiddie pool, they invented a new game they call “Fast Turtle”.Fast Turtle
Cape Coral Web Design
22 Jul ’14 @ 7:42 am
It’s a pity you don’t have a donate button! I’d certainly donate to this superb blog!
I suppose for now i’ll settle for bookmarking and adding your RSS feed
to my Google account. I look forward to new updates and will talk about this website
with my Facebook group. Talk soon!
23 Mar ’15 @ 4:16 pm
and I had not known you a month before I felt that you
were the last man in the world whom I could ever be prevailed
to married,” Mr. All that transpired in the poem was recorded during the hey days of the industrial revolution that swept across Europe and the rest of the world. In anticipation for the upcoming ‘Fifty Shades of Grey’ unveiling, ‘Today’ has been offering whip-ready fans brief clips of the hotly anticipated movie.
10 Nov ’19 @ 6:26 pm
10 Feb ’22 @ 10:09 pm
so cute paints.دانلود IGI