Dot Physics

Archives for July, 2009

Scratch and HyperHomeschool

Two things. First, my wife started blogging. The best thing about this is that she can no longer complain about my blogging. Her blog is over at HyperHomeschool.com. Basically, she is keeping up with her homeschooling stuff online. I see great potential here. I guess this gets to the second thing. I made a little…

The fall semester is coming up soon. Some students will be taking physics in college. So, here are some pre-class tips – mainly aimed at college students taking algebra-based physics. Are you afraid? If you are reading this, maybe you found it because you were looking for stuff on physics. Maybe you are a little…

Pluto. Planet, or not?

Still moving stuff over from my last server. Here is one that keeps coming up. Surprisingly, I STILL get comments and questions from students and teachers about Pluto. Questions such as: “Why do scientists hate Pluto?” “How did they discover that Pluto was not a planet” “What will happen to our planet songs without Pluto?”…

Plotting with VPython and PyLab

I am not a programmer. Just to be clear. I use python to get things done, but I am sure it could be done in more efficient ways. Anyway, I sure you know how much I like vpython – especially for teaching physics. However, sometimes I use it for blogging stuff also. The problem is…

You have no idea how long I have been sitting on this one. I made some videos like a billion years ago, and still no post. Why? Oh well, here it is. I like video analysis of motion. I like looking at stuff on youtube or other video sites. But sometimes, you need to make…

Playing with a merry go round

Thanks to reader Cleon for notifying me of this video on youtube. Check it out. First, some notes. I am sure you noticed that the aspect ratio is incorrect (at least that was the first thing I noticed). The boys must have made a 16:9 video, but then uploaded it to youtube as a 4:3.…

Elephants can’t jump. Really.

Sciencegeekgirl is blogging from the AAPT. She talks about showing something interesting to get students thinking, and here is her example: This reminds me of Dan Meyer’s What Can You Do With This stuff. Anyway, I can’t help it. I must analyze this video. Plus, Fran essentially threw down the gauntlet and called me out…

Here is an interesting article from Mashable: In the Future, the Cost of Education will be Zero In the article, the author Josh makes the following points: College is expensive and some people can’t really afford it. There is a growing trend in online universities. University of the People is one example. Other universities are…

Convert a dive light into LED

This is not really physics stuff. Well, it could be, but I am not going to take it that way. This is just a post that I consider to possibly add to the usefulness of the internet. When ever I want to do something, I always search online first. Suppose I want to make one…

I am pretty sure this came up on some email discussion listserv. Someone mentioned that students could just look up the answers to homework on cramster.com. Maybe you are more with it than I am, but I had never heard of this. Of course I had to check it out. At the basic level, cramster…