How Ecosystems Change Over Time Scaffolded Phenomena-Based Lesson: Ecological Succession Across the Mount St. Helens Volcanic Blast Zone Presentation | Environmental Science | 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 Environmental Science (grades 9–12) chapter How Ecosystems Change Over Time, built around the phenomenon Ecological Succession Across the Mount St. Helens Volcanic Blast Zone. 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: How Ecosystems Change Over Time Scaffolded Phenomena-Based Lesson: Ecological Succession Across the Mount St. Helens Volcanic Blast Zone Teacher Discussion Guide; How Ecosystems Change Over Time Scaffolded Phenomena-Based Lesson: Ecological Succession Across the Mount St. Helens Volcanic Blast Zone Student Response Sheet. Original version: How Ecosystems Change Over Time Phenomena-Based Lesson: Ecological Succession Across the Mount St. Helens Volcanic Blast Zone 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: “The ecosystem is disrupted because ____________.”

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

Standards: HS-LS2-6 — Evaluate claims, evidence, and reasoning that the complex interactions in ecosystems maintain relatively consistent numbers and types of organisms in stable conditions, but changing conditions may result in a new ecosystem. HS-LS2-7 — Design, evaluate, and refine a solution for reducing the impacts of human activities on the environment and biodiversity.

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 Environmental Science, 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.