Timber Volume Estimation Phenomena-Based Lesson: Two Rules, One Load: The Kreider Tract Logs Presentation | Forestry | 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 Phenomena-Based Lesson in the Forestry (grades 9–12) chapter Timber Volume Estimation, built around the phenomenon Two Rules, One Load: The Kreider Tract Logs. It is sold separately from the other two parts of the set.

• What's inside: Student Slide Show (editable .pptx + PDF, 12 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 Forestry, grades 9–12.

Sample question“1. Recompute Log 1 and Log 6 under both rules from the September 12 list. Where does the Doyle gap come from on each log, and why is the percentage gap so much larger on Log 1?”

Complete the set: Timber Volume Estimation Phenomena-Based Lesson: Two Rules, One Load: The Kreider Tract Logs Teacher Discussion Guide; Timber Volume Estimation Phenomena-Based Lesson: Two Rules, One Load: The Kreider Tract Logs Student Response Sheet. Scaffolded version: Timber Volume Estimation Scaffolded Phenomena-Based Lesson: Two Rules, One Load: The Kreider Tract Logs Presentation.