Vintage cars 0 Overview Using this Resource Connecting to the Curriculum Marking Student Responses Working with Students Further Resources This task is about distance time and speed. Some vintage cars were travelling in a car rally. Question 1Change answer a) The first car took an average time of 2 minutes for every kilometre it travelled. a) The first car took an average time of 2 minutes for every kilometre it travelled. i) How long did it take the car to travel 300 kilometres? ii) What was its average speed? km/h Question 1Change answer b) A second car travelled at an average speed of 50 kilometres per hour. b) A second car travelled at an average speed of 50 kilometres per hour. How long did it take this car to travel 225 kilometres? hours Question 1Change answer c) Another car took an average time of 1 minute 15 seconds for every kilometre it travelled. c) Another car took an average time of 1 minute 15 seconds for every kilometre it travelled. i) How long did it take this car to travel 160 kilometres? ii) What was its average speed? km/h Task administration: This task can be completed with pencil and paper or online (with auto marking displayed to students). Level: 5 Curriculum info: Maths, Number and Algebra, Number Strategies Keywords: time, distances, speed, rates Description of task: Students convert speeds of vintage cars into kilometres per hour, and calculate distances travelled at these speeds. Learning Progression FrameworksThis resource can provide evidence of learning associated with Multiplicative thinking, sets 8-9 within the Mathematics Learning Progressions Frameworks.Read more about the Learning Progressions Frameworks. Answers/responses: Y10 (11/99) a) i) ii) 600 minutes or 10 hours 30 [Accept 300 ÷ answer to a) i) in hours] easy moderate b) Any 1 of: 270 minutes 4 hours 30 minutes 4.5 hours easy c) i) ii) Any 1 of: 200 minutes 3 hours 20 minutes 3.33 hours 48 [Accept 160 ÷ answer to b) i) in hours] very difficult difficult Diagnostic and formative information: Common error Likely calculation Likely reason a) i) ii) 6 hour 150 min 1 hr 50 min 60 600 ÷ 100 300 ÷ 2 300 ¸ 2 600 ÷ 10 Assumes 1 hour = 100 minutes. Divides instead of multiplies. Divides instead of multiplies and assumes 1 hour = 100 minutes. c) i) 184 min 3 hrs 4 min 160 × 1.15 Assumes 15 min = 0.15 hours. Time on the track How far? Motorbike journey Driving speed
