Science and History met together. Our focus was on how we teach students to use evidence to support their claims/statements/explanations. Dan shared a lesson from 6th grade where we made repeated observations of a candle burning inside a jar and talked about how we could use that to find evidence for the percentage of oxygen in the air in the room—and then how we could think about any difference between our number and the “expected” value. Tom shared a lesson from 9th grade where we simulated countries just before WWI and passed notes back and forth, trying to establish allies and responding to prompts he gave us. We broke into high school and middle/lower school groups to discuss in more depth. In the HS group, we talked about many areas and skills students find difficult as they work on their writing, noting the similarities or corresponding types of problems that students encounter in science classes.