E- LESSON PLAN FOR CLASS IX FOR MATH TEACHER Lesson plan for mathematics class IX, chapter 12, Heron's Formula. c b s e lesson plans for mathematics teachers, Method to write lesson plan for maths class 9, lesson plan for mathematics grade IX, lesson plan for maths teacher in B.Ed. NAME OF THE TEACHER DINESH KUMAR CLASS IX CHAPTER 12 SUBJECT MATHEMATICS TOPIC HERON'S FORMULA DURATION : 4 Class Meetings PRE- REQUISITE KNOWLEDGE:- Knowledge of different types of triangles and their perimeter and area.