8th Grade Physical Science Curriculum Unit 1: Density and Buoyancy Lesson 6. Cumulative Assessment: Density Investigation Poster Objectives: Students will communicate an understanding of the investigation process and how their experiments provide evidence to support explanations of density. Overview If you have done many of the activities in this sequence, you have invested many days of instruction. How can you find out what your students have learned? How can you push them a bit harder to make sure the ideas come together in a meaningful way for them? This assessment activity is designed to do both of these things.It may be tempting to push ahead to a new topic, but students will gain much more knowledge from this chance to reflect and synthesize what they have learned than they did from the original activities. Key Questions: See assignment sheet. Time: Three to class sessions for posters, one for peer review, and two more for presentations. (Total class sessions: five.) Materials Poster paper colored pencils, markers, crayons rulers scissors Resources Poster Assignment Sheet (PDF) Poster Peer Review (PDF) Assessment: This is designed as an assessment of the entire unit sequence. OUSD/Calif. Science Content Standards: All standards from this unit are potentially addressed through this activity. Procedure Prepare an assignment sheet (see example) that challenges students to create a poster and short report illustrating one of the investigations they did, including the question and hypothesis, a summary of their results, and an explanation of the meaning or significance of their results. They will also do an oral presentation to the class. Give them a list of the investigations to choose from. Omit any that were trivial. With each investigation, pose a few questions to make sure students focus on and explain the concept of density. When their first draft is done, give them the poster peer review sheet and have them work with another group to review and critique one anothers' work. You can then collect these drafts and comments, add your own feedback and return them to the students for revision. fluid it has displaced. d. how to predict whether an object will float or sink. Unit 1 Home