Week 4_Three types of rocks_powerpoint presentation Week 1_Origin and Structure of the Earth.pptx Module 1_Formation of Heavy Elements.pptx intermolecular forces_physical science_Grade 12 week2_polarity_Physical science _ Grade 12 SHS_ Week 3 _Lesson 5 rocks and minerals.ppt SHS_Week 1_Origin and Structure of the Earth.pptx SHS _ Physical Science_ week 1_Formation of Heavy Elements.pptx