Use and describe the use of rules and measuringcylinders to find a length or a volume3 Use and describe the use of clocks and devices,both analogue and digital, for measuring aninterval of time4 Obtain an average value for a small distanceand for a short interval of time by measuringmultiples (including the period of a pendulum)Supplement2 Understand that a micrometer screw gauge isused to measure very small distancesP1.2 MotionCore1 Define speed and calculate average speed fromtotal distancetotal time4 Plot and interpret a speed–time graph and adistance–time graph6 Recognise from the shape of a speed–time graphwhen a body is:– at rest– moving with constant speed– moving with changing speed8 Calculate the area under a speed–time graph towork out the distance travelled for motion withconstant acceleration10 Demonstrate an understanding that accelerationand deceleration are related to changing speedincluding qualitative analysis of the gradient of aspeed–time graph11 State that the acceleration of free fall g for abody near to the Earth is constantSupplement2 Distinguish between speed and velocity3 Define and calculate acceleration usingchange of velocitytotal time5 Calculate acceleration from the gradient of aspeed–time graph7 Recognise linear motion for which theacceleration is constant and calculate theacceleration9 Recognise motion for which the acceleration isnot constant