tag:blogger.com,1999:blog-7356300930740320331.post6452380065074243361..comments2024-03-05T22:04:38.877-08:00Comments on Teach. Brian. Teach.: Misconceptions Misconceived: The example of currentBrianhttp://www.blogger.com/profile/06289013669698459078noreply@blogger.comBlogger18125tag:blogger.com,1999:blog-7356300930740320331.post-32495626216693739012018-07-23T21:46:51.673-07:002018-07-23T21:46:51.673-07:00Professionally written blogs are rare to find, how...Professionally written blogs are rare to find, however I appreciate all the points mentioned here. I also want to include some other writing skills which everyone must aware of.<br /><a href="http://www.rakball.com/category/%E0%B8%84%E0%B8%A5%E0%B8%B4%E0%B8%9B%E0%B8%9A%E0%B8%AD%E0%B8%A5" rel="nofollow">คลิปบอล</a>Anonymoushttps://www.blogger.com/profile/04105346012156757343noreply@blogger.comtag:blogger.com,1999:blog-7356300930740320331.post-86683351672760086082018-07-23T21:24:08.447-07:002018-07-23T21:24:08.447-07:00Mesmerized article written on this blog with other...Mesmerized article written on this blog with other relevant information. It is straight to the point that how we can improve our skills as well as how we can be represented to a new stream of professionalism.<br /><a href="http://www.ledinfinite.com/streelight-infinite-led/" rel="nofollow">ไฟ ถนน led</a>Baker Axtonhttps://www.blogger.com/profile/15457450069709807860noreply@blogger.comtag:blogger.com,1999:blog-7356300930740320331.post-43331045977769190782011-03-26T07:27:46.924-07:002011-03-26T07:27:46.924-07:00@Grace. I got a chance this morning to follow alon...@Grace. I got a chance this morning to follow along for a bit of your rabbit hole chase, at least the part that made it to twittering among you, max, and Frank. <br /><br />You are quite welcome for the entertaining Friday afternoon. I've been going to down that rabbit hole for sometime. I'm not sure where the bottom is, if there even is one?<br /><br />And recently, I've lost too many hours to following question, "How does a refrigerator work?" There are some many puzzles to sort out, and every time you solve one, a new one emerges.Brianhttps://www.blogger.com/profile/06289013669698459078noreply@blogger.comtag:blogger.com,1999:blog-7356300930740320331.post-12736738596887888662011-03-25T15:01:11.177-07:002011-03-25T15:01:11.177-07:00This post sent me down a rabbit hole-- and I dragg...This post sent me down a rabbit hole-- and I dragged several colleagues & a former roommate (now physics PhD student) into it, but two hours later, the figurative (and in this case appropriate) light bulb finally went off.<br /><br />I think I finally understand the relationship between current, voltage, resistance, power, batteries and light bulbs at a conceptual level rather than as a series of equations to be endlessly and mindlessly manipulated.<br /><br />Thanks for a highly entertaining Friday afternoon (although I should probably now go and reflect on what skills I've acquired to allow me to be a self-driven learner in this way such that I can think about better preparing students to do so)!gracehttps://www.blogger.com/profile/09629147659164801681noreply@blogger.comtag:blogger.com,1999:blog-7356300930740320331.post-91045048706002838892011-03-25T14:30:40.953-07:002011-03-25T14:30:40.953-07:00@Max
Thanks for sharing this. I think it's aw...@Max<br /><br />Thanks for sharing this. I think it's awesome. And I wouldn't say you have a misconception. I'd say you are coming to view your own understanding as possibly problematic, and it seem to me that you are interested enough in your own ideas (and the ideas of others) to pursue that understanding further. I think that's where I want my students to be.<br /><br />Good luck with your own inquiry. Let me know where you land.Brianhttps://www.blogger.com/profile/06289013669698459078noreply@blogger.comtag:blogger.com,1999:blog-7356300930740320331.post-63581653546119700832011-03-25T14:20:48.185-07:002011-03-25T14:20:48.185-07:00@ Grace. I think you are soooo right that the two ...@ Grace. I think you are soooo right that the two are not necessarily mutually exclusive. I'm not advocating for one over the other. And I think you are right to say we should be mindful to engage students with phenomena and curiosities that will touch upon important disciplinary knowledge. Just because students are curious about something, doesn't mean it will be productive for science learning.Brianhttps://www.blogger.com/profile/06289013669698459078noreply@blogger.comtag:blogger.com,1999:blog-7356300930740320331.post-72453353048418224072011-03-25T13:52:06.557-07:002011-03-25T13:52:06.557-07:00So we get to chatting about this on Twitter, and I...So we get to chatting about this on Twitter, and I say, "in a series circuit, the 2nd bulb is dimmer than the 1st," proving that I too have misconceptions about current! And, providing me with a scenario that makes me wonder and for which the constant-ness of current comes to the rescue, I think. I hope it does anyway...Maxhttps://www.blogger.com/profile/16935784635103701185noreply@blogger.comtag:blogger.com,1999:blog-7356300930740320331.post-71044196217154525312011-03-25T13:32:53.084-07:002011-03-25T13:32:53.084-07:00Very thought-provoking, and leaves me with a lot o...Very thought-provoking, and leaves me with a lot of questions :) Let me try to articulate at least one of them, although my own misconceptions about current may be getting in the way of my being able to fully understand this!<br /><br />It sounds like your students are asking "why does the battery die" rather than the more artificial "what is current," and you'd like to address the former question rather than the latter, because while there's value in both, there's more value in the former since it's more authentic, fosters a better learning environment, etc.<br /><br />If I'm interpreting this post correctly, then I totally agree. My question, however, is whether the two are exclusive-- and this is where my shaky physics understanding comes into play-- to what extent will students address the question "what is current" through addressing "why does a battery die"? If the answer is "not very much," would we then need another student-generated authentic question that leads us to a more thorough exploration of current, or could we step in and explain current and explain how it's related?<br /><br />Not sure if I'm making sense here :)gracehttps://www.blogger.com/profile/09629147659164801681noreply@blogger.comtag:blogger.com,1999:blog-7356300930740320331.post-74824031307550423532011-03-25T13:31:03.377-07:002011-03-25T13:31:03.377-07:00Max, I think you hit the nail on the head. I'm...Max, I think you hit the nail on the head. I'm concerned that we obsess over misconceptions, instead of the honest pursuits to understand the world from which those misconceptions arise. I'm for helping students to continue pursuing that understanding of the world, and patiently letting students' ideas change through that pursuit.Brianhttps://www.blogger.com/profile/06289013669698459078noreply@blogger.comtag:blogger.com,1999:blog-7356300930740320331.post-8281434851941504192011-03-25T13:24:41.272-07:002011-03-25T13:24:41.272-07:00OK. So to address your concern. It is probably a b...OK. So to address your concern. It is probably a bad idea for me to put "physics" upfront, when I want to talk about students. That's bad journalism to make my audience wait. <br /><br />But,I think I was trying present an argument ("no build up of charge implies constant flow"). This is a physical argument (based on a conceptualization of a flow model). In many physicists' minds, my argument is strongly associated with a more abstract principle often named by reference to the equation of continuity. Notice that I didn't write down that equation, I presented the argument and also named that argument by referring to a "culturally agreed upon" name for that argument.Brianhttps://www.blogger.com/profile/06289013669698459078noreply@blogger.comtag:blogger.com,1999:blog-7356300930740320331.post-11159155402741107172011-03-25T13:20:28.527-07:002011-03-25T13:20:28.527-07:00This post is making me think hard... about teachin...This post is making me think hard... about teaching AND about electricity. I don't feel like I know much about electricity, but I don't think I ever had this misconception about current, in large part because I was taught about electricity with a skit in which kids playing electrons holding flashlights got shoved out of a "battery," along a path, into a "lightbulb" (where they turned on their flashlights"), and along a path back to the battery. So the voltage differential was a mystery (not in my model) but current seemed pretty obvious.<br /><br />Pedagogically, what I'm wondering is, don't most conceptions/misconceptions have a scenario that makes them worth wondering about? So... lightbulbs and batteries and wall sockets make us wonder, "just what gets used up when I 'use' electricity? How do I 'conserve' that? Why is the 2nd bulb on a circuit dimmer than the first?" etc." The answers to those questions have to do with something else... energy and voltage I guess. For what scenario is the current being constant the answer? What experiences led physicists to quantify and measure current?<br /><br />I guess I'm wondering whether we need to be wary of misconceptions, or if we need to be wary of using the wrong experiences to address misconceptions. Playing with electricity, natural questions emerge, and we build models to answer those questions. When the models have "bugs" that are unrelated to the interesting questions, teachers shouldn't lecture or give seemingly unrelated tasks to address those misconceptions. Instead they should say, "great, this is a functional model for the experiences we've had and questions we've asked! Does it apply to this next experience?" And engage kids in asking those questions, too.<br /><br />Does that address some of your concerns about misconceptions, or am I missing your point?Maxhttps://www.blogger.com/profile/16935784635103701185noreply@blogger.comtag:blogger.com,1999:blog-7356300930740320331.post-85973562566592347562011-03-25T13:11:46.220-07:002011-03-25T13:11:46.220-07:00Been there, didn't mean to rub you. Just have...Been there, didn't mean to rub you. Just have scarce time to make comments and that can cause a few shortcuts. I do assume people post to create discussion. It's hard to tell when that is not the case. Hope your weekend is good.Rickhttps://www.blogger.com/profile/17712132973337350124noreply@blogger.comtag:blogger.com,1999:blog-7356300930740320331.post-52019915389848409102011-03-25T13:00:17.945-07:002011-03-25T13:00:17.945-07:00@ Rick. ;) It's been a loooong week.@ Rick. ;) It's been a loooong week.Brianhttps://www.blogger.com/profile/06289013669698459078noreply@blogger.comtag:blogger.com,1999:blog-7356300930740320331.post-65374409495278983252011-03-25T12:59:05.669-07:002011-03-25T12:59:05.669-07:00@Brian - ok, message received. Always being helpf...@Brian - ok, message received. Always being helpful, I suggest you not try out for American Idol.Rickhttps://www.blogger.com/profile/17712132973337350124noreply@blogger.comtag:blogger.com,1999:blog-7356300930740320331.post-39943767744132221082011-03-25T12:54:34.577-07:002011-03-25T12:54:34.577-07:00@Frank... this might answer your question about po...@Frank... <a href="http://studentstalkscience.blogspot.com/2011/03/rainbow-question-with-las.html" rel="nofollow">this</a> might answer your question about possibility of filling a course with students' own question. In one hour, with the right question and facilitation, we were excited about a lot of awesome questions, which could be explored forever.Brianhttps://www.blogger.com/profile/06289013669698459078noreply@blogger.comtag:blogger.com,1999:blog-7356300930740320331.post-67121247136921430552011-03-25T12:42:25.178-07:002011-03-25T12:42:25.178-07:00@ Rick. Thanks for your journalistic critique.@ Rick. Thanks for your journalistic critique.Brianhttps://www.blogger.com/profile/06289013669698459078noreply@blogger.comtag:blogger.com,1999:blog-7356300930740320331.post-8466492757889717922011-03-25T12:30:37.261-07:002011-03-25T12:30:37.261-07:00I'm not trying to dog you here, but I didn'...I'm not trying to dog you here, but I didn't really read past this paragraph:<br />" The current in a single-bulb-single-battery circuit is the same everywhere, not different. There are different ways to make sense of this, but a physicist often thinks of this in terms of the continuity equation– if charge isn't building up anywhere, the flow must be steady."<br /><br />I worked with many great physicists, including a couple with a really, really big prize and I've never seen one of them think of anything in terms of "the continuity *equation.*" The really good ones are always thinking in terms of a physical model, and that might lead to a convenient way to express that model using an equation, but never, not once can I imagine a great teacher going to an equation when dealing with high school students or even 90% of undergraduates. Always begin with a physical model. (Unless you can't of course, eg quantum physics etc, but even then, make mention of that caveat.)<br />Perhaps you did that but you really did cause my loss of interest when you went directly to an equation.Rickhttps://www.blogger.com/profile/17712132973337350124noreply@blogger.comtag:blogger.com,1999:blog-7356300930740320331.post-74883785611528202262011-03-25T11:34:17.254-07:002011-03-25T11:34:17.254-07:00This is a great post! How do we take our physics c...This is a great post! How do we take our physics courses and frame them in terms of students' own ideas and questions? Is there enough to reframe an entire year of intro physics?Frank Noschesehttps://www.blogger.com/profile/16584042587600632345noreply@blogger.com