8th grade science students have been working hard on lessons about density from our Properties of Matter unit. So far we have measured the densities of solids, liquids and gases and found out how we can use density to predict behavior. We built thermometers using water or air in the bulb and observed the differences in expansion and contraction. Students also observed the heating of a bimetallic strip (the kind used in thermostats). Students now understand why hot air rises (ask them).
It is taking a bit of an adjustment for some students to do all the homework and get it done on time. As science teachers, we are no longer just responsible for teaching science concepts (and the math needed for that) but we also have literacy standards that we are required to cover. We don’t have time to complete everything in class, so we address most of the literacy standards through our homework assignments. In addition, the homework assignments support the learning of science concepts. Many of the readings provide a real life connection that makes the classroom work relevant to students’ experiences. It is important that students do the homework whether it is on time or not.
On Friday, we got the burners out for the first time and students got to heat some chemical elements and compounds to see what kinds of changes can take place when matter is heated. Check it out! Our first chemical reactions of the year. We will be exploring the difference between chemical changes and physical changes over the next several lessons.
