Acid-Base Chemistry & the pH Scale Scaffolded Phenomena-Based Lesson: The Hyper-Acidic Turquoise Waters of Kawah Ijen's Crater Lake Presentation | Chemistry | Grades 9–12

This is the student-facing slide presentation that introduces the phenomenon, walks the class through observations and driving questions, and frames the evidence students will use for the Scaffolded Phenomena-Based Lesson in the high school Chemistry (grades 9–12) chapter Acid-Base Chemistry & the pH Scale, built around the phenomenon The Hyper-Acidic Turquoise Waters of Kawah Ijen's Crater Lake. This scaffolded version adds sentence frames and extra supports for students who need them. It is sold separately from the other two parts of the set.

Complete the set: Acid-Base Chemistry & the pH Scale Scaffolded Phenomena-Based Lesson: The Hyper-Acidic Turquoise Waters of Kawah Ijen's Crater Lake Teacher Discussion Guide; Acid-Base Chemistry & the pH Scale Scaffolded Phenomena-Based Lesson: The Hyper-Acidic Turquoise Waters of Kawah Ijen's Crater Lake Student Response Sheet. Original version: Acid-Base Chemistry & the pH Scale Phenomena-Based Lesson: The Hyper-Acidic Turquoise Waters of Kawah Ijen's Crater Lake Presentation.

Sections: Section 1: Three-dimensional Learning Alignment (ngss); NGSS Dimension; Scaffolded Three-dimensional Learning Goal; Section 3: Scaffolded Science Talk Moves Matrix; Scaffolded Talk Move; Verbatim Facilitation Prompt & Talk Goal; Everyday Student Misconception (flawed Claim); Scientific Evidence & Intuitive Correction. Sample item: “A lower pH means a ____________ concentration of H₃O⁺.”

What's inside: SCAFFOLDED Student Slide Show (editable .pptx + PDF, 16 slides).

Standards: HS-PS1-2 — Construct and revise an explanation for the outcome of a simple chemical reaction based on the outermost electron states of atoms, trends in the periodic table, and knowledge of the patterns of chemical properties. HS-PS1-6 — Refine the design of a chemical system by specifying a change in conditions that would produce increased amounts of products at equilibrium.

Resource type: Phenomena-Based Lesson – Presentation. Format: editable Microsoft PowerPoint 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.