In this resource, 8th grade students are tasked with exploring changes in matter from various chemical reactions to measure changes in temperature of the system, eventually gaining a better understanding of exothermic or endothermic reactions. In addition, students will practice using experimental evidence to support their scientific claims about this concept. There is a detailed lesson plan (although there are a few attachments that are not included. You will see “(Insert file name here)” within the document.) There is also a pretty advanced video, via the National Repository of Online Courses Science, which contains instruction on temperature, heat, Joule's apparatus, specific heat, and thermo expansion.
The structure for using evidence to support scientific claims is very well developed. This resource includes a rubric focused on Claim, Evidence, Linking Details, and Reasoning. These goals are reinforced throughout the writing and peer-editing process, including a nice peer editing handout that prompts students to color-code peers’ explanations to best highlight the claim, evidence, details and reasoning in the work.