Back to Course Science Dexter Box Grade 7 0% Complete 0/0 Steps Chemical Rocket 1 Topic Presentation Sound Visualisation 1 Topic Presentation Simple Pendulum 1 Topic Presentation Electromagnetic Crane 1 Topic Presentation Science Dexter Box Grade 7 Sound Visualisation Lesson 2 of 4 In Progress ← Previous Sound Visualisation Lesson Content 0% Complete 0/1 Steps Presentation