Paleoclimate Oxygen-18 Isotope Fractionation in Polar Ice Core Records CER Phenomena Worksheet | Chemistry | Grades 9–12

Paleoclimate Oxygen-18 Isotope Fractionation in Polar Ice Core Records CER Phenomena Worksheet is a Claim-Evidence-Reasoning phenomena worksheet for high school Chemistry (grades 9–12) on Paleoclimate Oxygen-18 Isotope Fractionation in Polar Ice Core Records (chapter: Atomic Structure & the Development of Atomic Theory).

Pairs with: Atomic Structure & the Development of Atomic Theory Slide Show Presentation; Atomic Structure & the Development of Atomic Theory Guided Notes; Atomic Structure & the Development of Atomic Theory Lesson Quiz; Atomic Structure & the Development of Atomic Theory Vocabulary Words & Definitions.

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: Paleoclimate Oxygen-18 Isotope Fractionation in Polar Ice Core Records CER Worksheet (editable .docx + PDF, about 1,560 words, 8 pages); answer key / model answers for the teacher.

Standards: HS-PS1-1 — Use the periodic table as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms. HS-PS1-8 — Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.

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 high school Chemistry, 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.