mean speed. about speed, what it means, its units demonstration Exploring variables that Explain how the distance travelled and of measurement and some examples Use this Science. affect the speed the time taken affects the speed. of fast- and slow-moving objects. demonstration to of toy cars Use the formula relating speed, reinforce the running down a distance and time. Exploring: Investigating speed meaning of ramp. Represent simple journeys on a Students investigate the variables accuracy and distance– time graph. that affect the speed of toy cars reliability. Demonstrate Describe changes of speed shown on a running down a ramp. Factors that how a light gate distance–time graph. could be investigated: steepness of can be used Explain what relative speed means. the slope, mass of the cars/trolleys, to measure the Securing type of car, different surfaces for the speed of a toy Explain why the maximum speed on a ramp. Use light gates to measure the car or trolley journey is usually greater than the mean speed of the cars. down a ramp. mean speed. Calculate speeds from the gradient of Explaining: Measuring speed a distance–time graph. demonstration Calculate the relative speed between Demonstrate how a light gate can be two objects moving along the same used to measure the speed of a toy line. car or trolley down a ramp. Exceeding Work out the direction of relative Plenary: Thinking about speed motion for objects not moving along Consider All Possibilities: One car the same line. completes its journey in a shorter Working Scientifically time than another. (Possible answers: Change the subject of a simple it travels faster; it does not stop and mathematical formula. the other does; it does not have as Calculate the gradient of a line on a far to go.) graph. Lesson 9Id: Turning forces Learning objectives Exemplar teaching activities Differentiation Resources Maths skills Practical skills Developing Starter: Examples of levers Starter: Resources Substitute Students try Describe how a simple lever can Show students examples of the same Examples of from 9Id into different levers. magnify force or distance. type of machine, such as a pair of levers Exploring formulae. Identify the pivot, load and effort in embroidery scissors and a pair of Give students a Science. Use a long Class 1 levers. kitchen scissors, or a small and large scenario: they object with a
mean speed. Explain how the distance travelled and the time taken affects the speed. Use the formula relating speed, distance and time. Represent simple journeys on a distance– time graph. Describe changes of speed shown on a distance–time graph. Explain what relative speed means. Securing Explain why the maximum speed on a journey is usually greater than the mean speed. Calculate speeds from the gradient of a distance–time graph. Calculate the relative speed between two objects moving along the same line. Exceeding Work out the direction of relative motion for objects not moving along the same line. Working Scientifically Change the subject of a simple mathematical formula. Calculate the gradient of a line on a graph. about speed, what it means, its units of measurement and some examples of fast- and slow-moving objects. Exploring: Investigating speed Students investigate the variables that affect the speed of toy cars running down a ramp. Factors that could be investigated: steepness of the slope, mass of the cars/trolleys, type of car, different surfaces for the ramp. Use light gates to measure the mean speed of the cars. Explaining: Measuring speed demonstration Demonstrate how a light gate can be used to measure the speed of a toy car or trolley down a ramp. Plenary: Thinking about speed Consider All Possibilities: One car completes its journey in a shorter time than another. (Possible answers: it travels faster; it does not stop and the other does; it does not have as far to go.) demonstration Use this demonstration to reinforce the meaning of accuracy and reliability. Exploring Science. variables that affect the speed of toy cars running down a ramp. Demonstrate how a light gate can be used to measure the speed of a toy car or trolley down a ramp. Lesson 9Id: Turning forces Learning objectives Exemplar teaching activities Differentiation Resources Maths skills Practical skills Developing Describe how a simple lever can magnify force or distance. Identify the pivot, load and effort in Class 1 levers. Starter: Examples of levers Show students examples of the same type of machine, such as a pair of embroidery scissors and a pair of kitchen scissors, or a small and large Starter: Examples of levers Give students a scenario: they Resources from 9Id Exploring Science. Substitute into formulae. Students try different levers. Use a long object with a
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