Bacteria and Microorganisms Scaffolded Phenomena-Based Lesson: Symbiotic Nitrogen-Fixing Rhizobia in Legume Root Nodules 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 Bacteria and Microorganisms, built around the phenomenon Symbiotic Nitrogen-Fixing Rhizobia in Legume Root Nodules. 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.

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

Sample question“Although Earth's atmosphere is seventy-eight percent nitrogen gas, plants cannot absorb or use atmospheric nitrogen?”

Complete the set: Bacteria and Microorganisms Scaffolded Phenomena-Based Lesson: Symbiotic Nitrogen-Fixing Rhizobia in Legume Root Nodules Teacher Discussion Guide; Bacteria and Microorganisms Scaffolded Phenomena-Based Lesson: Symbiotic Nitrogen-Fixing Rhizobia in Legume Root Nodules Student Response Sheet. Original version: Bacteria and Microorganisms Phenomena-Based Lesson: Symbiotic Nitrogen-Fixing Rhizobia in Legume Root Nodules Presentation.