Here are a few pictures of the events throughout the day.
Lots of student verbal communication. Listening to them tell each other to start closer, move slower, change direction, stop and wait, etc. was wonderful. I think they really understand the concept of initial starting value as well as the difference between a gradually slanted line and a steep line. The most common thing I overhead was "You need to go slower, your line is too steep." I also love this day because it lets them move and see how graphs actually are formed. They get a chance to get their 8th grade sillies out while investigating a very important topic - functions!
Space is tight and setting up 8 runs so each group can be small enough is tricky. This year I put tape on the floor to mark off each team's area. That helped a ton! We usually can get into a common larger area in our school, but this year it didn't happen. A view of my room is below. I had 6 runs going across the back and then 2 up in the front running perpendicular to the others. Fun stuff trying to get 30 kids engaged! The other bad was that there are always those kiddos that don't truly understand what they are doing. I had students trying to walk in a curved motion to graph a curved line. It was tough to get some of them to see that they needed to walk straight to get a curved line. Trying to get them to realize they needed to vary their speed was a hard job today without just telling them.
My favorite part of this day is always watching groups try and create a step function. This year I had a group of girls do something I've never seen a group do - kick over chairs. The video here is not the original group that tried it, but one of the others that watched and learned and recreated. So much learning going on!
The way students normally tackle graphing the step function is in the second video, to the right. This takes them a while to actually figure out. They usually start out just jumping backwards or running across where the motion detector is detecting. So interesting to watch and listen to them thinking out loud!