Lesson 2 in this SoW. Follow weblink for lesson 3. Ready-to-go lesson. The investigation is very simple and looks at how mass affects the force. L3 – I can name some forces L4 – I can take accurate measurements and know the range of my measurements L5 – I can correctly calculate the mean and draw a bar chart L6 - I can use my bar chart to help me draw a conclusion L7 – I can explain why friction is is considered a force. (it changes speed of object or works in opposite direction of applied force)