Tuesday, September 10, 2013

Day 10 - Buggy Cars Day One

Today was our first day with the Buggy Cars, marking the beginning of our Constant Velocity Unit. Tomorrow will be even more fun when we get a chance to discuss and redesign our investigations to support our model building.

Today students decided on which variables to measure so I'm sure I'll see some interesting stuff. Tomorrow I'm confident we'll settle on distance and time.

Day 9 - Grading


I had a cold all weekend and finally got around to grading Friday's quiz this morning. I'm always amazed at how students solve problems. In this case students had to find the slope of the line that would explain this data set. What I found surprising was this approach to finding the slope. I had four or five different students do this. They totaled up the data in each column then divided one by the other.

I find this interesting because I have no idea why a student would approach this problem in this way. Often when I see several students taking the same approach to solving a problem I can figure out what the thought process was, but in this case I can not. As I type this I realize I should probably ask one of them to explain why they tried this approach. Unfortunately I've already passed the quiz back and I didn't note down the students who did this. In the future when I see something that baffels me about student thought process I need to make a note and then do a quick post quiz interview.

Saturday, September 7, 2013

Days 6-8 Already falling behind

Wow, only a week in and I'm already dropping the ball. I totally missed taking pictures for most of the week. On Day 6 I'd meant to take a picture during our Parent Night, but that was such a whirlwind that I never got to it. I have no pictures, so I will just give the capsule descriptions I'd have used.

For parent night we only have about seven minutes with each group. I began with a capsule description of Physics and asked them to recall Newton's Third  Law. With a little prompting they were able to recall it. We then discussed applications of. The law while I pushed a wall. We then talked a bit about what a Modeling Classroom looks like and what it doesn't look like. Then I modeled the Earth moon system with a basketball and tennis ball and the actual  distance they should be apart to highlight the misconceptions we often harbor. I finish with the question, "Which pulls harder, the Earth on the Moon or the Moon on the Earth?" I love this because they all forget the N3 discussion from five minutes earlier. Thus helping illustrate that telling isn't teaching.

Day 7 - We did circle labs in honors physics today. We had a collection of circles to work with. They needed to do two investigations, at least one of which used area as a variable. All variables must be measured directly, no calculating circumference or area. I really like this as it gives us a very familiar constant.

Day 8 - My electronics class is starting to take off. The class centers around the use of the Arduino Microcontroller. It's kind of awesome. There is no state mandated curriculum and my administration lets me do whatever I want with the class. I have a web page with lessons for students to work through and they work through them at their own rate. When they finish a "Unit" the call me over and I assess their mastery of the material presented.

Ok, next week I'll try to be better and have a picture to go with each day.

Wednesday, September 4, 2013

Day 5 - Internet Woes

I know, not a very interesting picture. This is one of our new Aerohive wireless access points. The light is white, unfortunately it was green for most of the day. Green means no internet. Our server died just before school started last week and internet has been in an out and not at all reliable even when you can get it. It's amazing how much I've come to rely on my constant connection in both my life and teaching.

Hopefully everything is good to go now for the school year.

Friday, August 30, 2013

Day 4 - y-intercept


This is one of my favorite data labs because the y-intercept is non-zero and has a real meaning.

Thursday, August 29, 2013

Day 3 - Whiteboarding


In physics we do a lot of work in small groups on whiteboards. Today we started a mini-data lab investigating the relationship between the length of a pipe and its mass. It's a pretty straight forward idea, however, it will help us build the skills we need to lay the foundation for the rest of the school year.

Tuesday, August 27, 2013

Day 2 - Pre-Testing


Boring picture, but important day! Today I administered the Force Concept Inventory to my students. This is a 30 question multiple choice test designed to assess understanding of Newton's Laws. There is a great deal of research backing it up. I'll give it again near the end of the year to gauge how well I did as a teacher.