This is the fourth lesson in the Forces topic of Activate 1, directed at a mixed ability Yr 7 Science class. The presentation includes a challenge question, support and extension tasks on all relevant slides. collaborative learning opportunities. A worksheet on interaction pairs, where students have to decide the pairs acting on an object - includes a worked example, scaffolded questions and challenging section to stretch higher ability students. Learning Outcomes: Describe the effects of a field Describe the effects of gravitational forces on Earth and in space Appropriately use an equation to calculate weights This is available as a bundle here: https://www.tes.com/teaching-resource/activate-1-p1-yr-7-forces-11777264 Please rate and comment on what you find useful so I can alter my lessons in future. Many thanks