Refraction, Snell's Law, and Index of Refraction in Optical Media CER Phenomena Worksheet | Academic Physics | Grades 9–12

Refraction, Snell's Law, and Index of Refraction in Optical Media CER Phenomena Worksheet is a Claim-Evidence-Reasoning phenomena worksheet for Academic Physics (grades 9–12) on Refraction, Snell's Law, and Index of Refraction in Optical Media.

Sections: National Teaching Standard & Investigation Objective; Investigation Evidence Dossier (documents 1–5); Document-based Scientific Writing Prompt (dbq); Student CER Writing Response Section; 4-point Analytic CER Scoring Rubric; 1. Exemplary Model Thesis / Claim:; 2. Designated Evidence Points From Documents:; 3. Comprehensive Scientific Reasoning:. Sample item: “Teacher: _______________________”

What's inside: Refraction, Snell's Law, and Index of Refraction in Optical Media CER Worksheet (editable .docx + PDF, about 1,494 words, 6 pages); answer key / model answers for the teacher.

Standards: NGSS High School Physical Science (HS-PS) disciplinary core ideas and the science practices of analyzing data and constructing explanations.

Resource type: CER Phenomena Worksheet. Format: editable Microsoft Word file plus a ready-to-print PDF.

Classroom use: Students read the case, analyze the data, and write a CER argument; a model answer and scoring guide are included. Built for Academic Physics, grades 9–12.

Format note: These files are delivered in Microsoft Office formats (Word and/or PowerPoint). If you open a worksheet that includes tables in Apple Pages or another non-Microsoft app, table formatting may not display correctly. For best results, use Microsoft Word or PowerPoint (or upload the file to Google Docs). If you run into any formatting issues, contact us and we can send a PDF version.