5 Bike race 2 Keywords: forcesfrictiongearsphysics concepts Task: Answer questions about making a bike go faster. Assessment focus: friction; gearing. Preview
4 Sliding 4 Keywords: forcesfrictiongravityphysics concepts Students suggest why two girls of the same weight go down a slide at different speeds, and then identify the forces acting on the girls. The assessment focus is on the forces of gravity and friction. Preview
4 Mountain bike race 2 Keywords: air resistanceforcesfrictionphysics concepts Task: Students answer questions about what will make mountain bike riders go faster. Assessment focus: Air resistance. Preview