After losing the seniors, we worked on a neat lab that I used to use when teaching meteorology. I used it to show how warm and cold air met along a frontal boundary. I used it today to reinforce how ocean water density is affected by temperature. The students loved the lab. Lots of Snapchat videos and photos of the warm water sliding over the sinking cold water and smiling students. They replaced the divider and then mixed one side to create warm purple water. They were so interested to see what happened when the divider was removed and were amazed when it wedged between the red and blue water.
Graduation is on 5/29 and today (5/27) was the last full day for seniors. We are one of the few places where the students get their senior prank approved by the administration. Last year the Class of 2013 parked two cars in the lobby and surrounded them by 2013 cups of water. This year they plastic wrapped the breezeway, and strung string across the walkway. Some seniors grilled in the parking lot at lunch. Good kids!
IS II students determined the salinity of a sample using evaporation. Clearly this is not a great method but it is good for them to practice a procedure and they better understand the concept of salinity in parts per thousand (S o/oo). They are able to calculate experimental error and discuss the reasons for it. The samples are placed in a drying oven overnight.
Not a busy day as most of the senior stayed home. Saturday was the prom and the post prom ended at 6 am on Sunday. We knew today was a planned skip day. Ironically, they senior quilt is on display. We had one building for K-1 for many years and the teachers put together a quilt made of 200 student drawn images done when the kids were in 1st grade. It is heartwarming to see how innocent they used to be and how universal the drawing seem to be. My favorite the one by Ryan who clearly remembered his planetarium visit!