The first day of third marking period, the second half of the year. Overall, I think it was a good day. In the W, L, and O sections we had day 2 of pressure. We learned that pressure depends on force and area, specifically, force/area. The units for pressure are either psi or pascals. If area is held the same, pressure goes up as force goes up--this is a direct proportion. If force is held constant, pressure goes down as area increases--this varies inversely. I demonstrated a balloon in a bottle, showing how the balloon stays inflated if I close the hole in the bottle once the balloon is blown up. The air pressure cannot get back in. I assigned 7-2a and 7-2b for homework.
In the S section, we did the bouncy ball lab. They did an excellent job, though I'm not sure they enjoyed the lab questions on the worksheet. And I still have all four raquet balls I started with. Yee-hah!
I also introduced the new cheer today. Much more complicated than the last one, and a lot louder.
Sweet justice.
