3.2 identify ways in which the position of an object can be changed
3.3 identify the six basic types of simple machines – lever; inclined plane; pulley; wheel and axle, including gear; screw; and wedge – and give examples of ways in which each is used in daily life to make tasks easier
3.4 describe how each type of simple machine allows humans to move objects with less force than otherwise would be needed
Grade 4
3.5 distinguish between pulley systems and gear systems that increase force and those that increase speed
3.8 identify the input components that drive a mechanism and the output components that are driven by it
Grade 5
2.2 measure and compare, quantitatively and/or qualitatively, the force required to move a load using different mechanical systems, and describe the relationship between the force required and the distance over which the force moves
3.3 explain the advantages and disadvantages of different types of mechanical systems
Grade 7
2.2 design, construct, and use physical models to investigate the effects of various forces on structures
3.2 describe ways in which the centre of gravity of a structure affects the structure’s stability 3.3 identify the magnitude, direction, point of application, and plane of application of the forces applied to a structure