Gravitational Forces Claim Evidence and Reasoning Assessment

This is an assessment for the NGSS Standard MS-PS2-4, gravitational forces. Students are asked to construct and present arguments about gravitational forces. What's better than a CER for that task??

Included in this download are two different CER tasks, one asking about the different masses of planets, one about the different distances between the planets. All of the information is presented through a diagram for students to use as their evidence. And all of the reasoning comes from any notes or teaching you gave for the unit!

Also included in this download is a rubric page including two separate rubrics to use to grade this assessment. I make each CER worth 100 points, but you can edit it to reflect whatever grading weight you need.

I've ALSO included a teacher answer key giving you an example of a correctly written CER, which is labeled and color-coded.

I hope that you find this assessment worth while and that I can save you some time! Thank you for your interest in my download!