9th Grade Lesson Plans - TeacherVision Webx 9th Grade. x Lesson Plans (146) results found LESSON PLANS. Which Metal Corrodes the Fastest? Time-lapse experiment that's great for a unit on states of matter Students test a variety of metals in water and salt… Subjects. Science. Chemistry. Science Projects. Add to Favorites. CREATE NEW FOLDER. LESSON PLANS. Theme Library. Discover …