Unit 1: Introductory Lesson-1-Scientific-Method-1Download Lesson-1-Scientific-Method-PPT-Worksheet-1Download Scientific-Notation-Notes-Student-Notes-keyDownload Unit-Practice-keyDownload SI-Units-NotesDownload Lesson-2-Lab-Safety-PPTDownload Lesson-2-Lab-Safety-PPT-WorksheetDownload Lesson-3-Eye-Safety-HandoutDownload Lesson-3-Fire-Safety-HandoutDownload Lesson-4-Hazard-Identification-Systems-HandoutDownload