Covalent Bonding & Molecular Geometry Phenomena-Based Lesson: The 104.5° Bent Angle of Water Enabling Ice to Float on Lakes Teacher Discussion Guide | Chemistry | Grades 9–12
Covalent Bonding & Molecular Geometry Phenomena-Based Lesson: The 104.5° Bent Angle of Water Enabling Ice to Float on Lakes Teacher Discussion Guide | Chemistry | Grades 9–12
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This is the teacher discussion guide, with lesson flow, facilitation questions, anticipated student ideas and model explanations for leading the class discussion for the Phenomena-Based Lesson in the high school Chemistry (grades 9–12) chapter Covalent Bonding & Molecular Geometry, built around the phenomenon The 104.5° Bent Angle of Water Enabling Ice to Float on Lakes. It is sold separately from the other two parts of the set.
Complete the set: Covalent Bonding & Molecular Geometry Phenomena-Based Lesson: The 104.5° Bent Angle of Water Enabling Ice to Float on Lakes Presentation; Covalent Bonding & Molecular Geometry Phenomena-Based Lesson: The 104.5° Bent Angle of Water Enabling Ice to Float on Lakes Student Response Sheet. Scaffolded version: Covalent Bonding & Molecular Geometry Scaffolded Phenomena-Based Lesson: The 104.5° Bent Angle of Water Enabling Ice to Float on Lakes Teacher Discussion Guide.
Sections: Section 1: Three-dimensional Learning Alignment (ngss); NGSS Dimension; Aligned Three-dimensional Learning Goal; Section 2: Anchoring Phenomenon & Driving Inquiry; Section 3: Productive Science Talk Moves Matrix; Talk Move Category; Verbatim Facilitation Prompt & Goal; Section 5: Student Misconceptions & Scientific Corrections. Sample item: “Why does water expand upon freezing, and how does VSEPR molecular geometry dictate this unique behavior?”
What's inside: Teacher Discussion Guide (editable .docx + PDF, about 1,178 words, 4 pages); answer key / model answers for the teacher.
Standards: HS-PS1-3 — Plan and conduct an investigation to gather evidence to compare the structure of substances at the bulk scale to infer the strength of electrical forces between particles. HS-PS2-6 — Communicate scientific and technical information about why the molecular-level structure is important in the functioning of designed materials.
Resource type: Phenomena-Based Lesson – Teacher Discussion Guide. Format: editable Microsoft Word file plus a ready-to-print PDF.
Classroom use: Open with the phenomenon slide show, let students record ideas on the response sheet, and lead the discussion with the teacher guide. 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.