Lesson 4: Hydrogen Lesson Overview Hide Overview Lesson 1: Engineering Drawings Lesson 2: Measurement Lesson 3: Tools Lesson 4: Hydrogen Lesson 5: Hydrogen Fuel Cell Lesson 6: Manufacturing & Production Lesson 7: Electricity Lesson 8: Gears Lesson 9: Simple Machines Lesson Plan Presentation Downloads Hydrogen Assessments Hydrogen - Answer Key Hydrogen Production Methods Jigsaw Activiy Hydrogen Let's make Hydrogen Activity Previous Lesson Lesson Overview Next Lesson