Measures and Data Read timetables using 24 hour

Measures and Data Read timetables using 24 -hour clock Calculate time intervals Objectives Day 1 Calculate time intervals using the 24 -hour clock. Day 2 Read timetables and calculate time intervals using the 24 -hour clock. Day 3 Read timetables using the 24 -hour clock. Calculate time intervals. Day 4 Given a time delay, count on to find new train departure and arrival times. © hamilton-trust. org. uk 1 Year 5

Measures and Data Read timetables using 24 -hour clock Calculate time intervals Starters Day 1 Read the 24 -hour clock (pre-requisite skills) Day 2 Converting between 12 -hour and 24 -hour clock (pre-requisite skills) Day 3 Pairs to 60 (simmering skills) Day 4 Units of time (simmering skills) © hamilton-trust. org. uk 2 Year 5

Measures and Data Read timetables using 24 -hour clock Calculate time intervals Starter Read the 24 -hour clock © hamilton-trust. org. uk 3 Year 5

Measures and Data Read timetables using 24 -hour clock Calculate time intervals Starter Converting between 12 -hour and 24 -hour clock © hamilton-trust. org. uk 4 Year 5

Measures and Data Read timetables using 24 -hour clock Calculate time intervals Starter Pairs to 60 © hamilton-trust. org. uk 5 Year 5

Measures and Data Read timetables using 24 -hour clock Calculate time intervals Starter Units of time © hamilton-trust. org. uk 6 Year 5

Measures and Data Read timetables using 24 -hour clock Calculate time intervals Objectives Day 1 Calculate time intervals using the 24 -hour clock. © hamilton-trust. org. uk 7 Year 5

Day 1: Calculate time intervals using the 24 -hour clock. This is a 24 -hour digital clock. What would this time look like on a 12 -hour digital clock? 1 6 3 0 Hours Minutes A school science lesson starts at 10: 45 and ends at 11: 35. How long does it last? Sketch a time number line to represent this on your whiteboard. How many minutes until 11 o’clock? Remember that we are counting up to 60, not 100… 35 mins 10: 45 When is it useful to use a 24 -hour digital clock rather than a 12 -hour digital clock? 11: 00 11: 35 15 mins + 35 mins = 50 mins © hamilton-trust. org. uk 8 Year 5

Day 1: Calculate time intervals using the 24 -hour clock. A P. E. lesson starts at 13: 30 and ends at 14: 45. How long does it last? Sketch a time number line to represent this on your whiteboard. Compare your timeline with your partner's. A singing lesson starts at 11: 50 and ends at 12: 35. How long does it last? Sketch a time number line to represent this on your whiteboard. © hamilton-trust. org. uk 9 Compare your timeline with your partner's. Year 5

Challenge © hamilton-trust. org. uk 10 Year 5

Measures and Data Read timetables using 24 -hour clock Calculate time intervals Objectives Day 2 Read timetables and calculate time intervals using the 24 -hour clock. © hamilton-trust. org. uk 11 Year 5

Day 2: Read timetables and calculate time intervals using the 24 -hour clock. What time does the 08: 45 reach Ottery St Catchpole? Write both the 24 -hour and 12 -hour times on your whiteboard. I am going to show a time in 12 -hour format. Convert it to 24 -hour format, search for it on the timetable and write the corresponding place name on your whiteboard. Five to midnight. 2 minutes past 9 in the morning. 20 past 5 in the afternoon. 10 to 7 in the evening. © hamilton-trust. org. uk 12 Year 5

Day 2: Read timetables and calculate time intervals using the 24 -hour clock. How long does the 08: 45 from Diagon Alley take to reach Ottery St Catchpole? I am going to ask you to calculate time intervals. Draw time-lines to help. How long does the 19: 52 from Kings Cross take to reach Hogsmeade? Which is the fastest train between Kings Cross and Hogwarts? © hamilton-trust. org. uk 13 Year 5

Day 2: Read timetables and calculate time intervals using the 24 -hour clock. Whole Class activity • For each route, find how long the train takes between Diagon Alley and Kings Cross. What do you notice? • Investigate journey times between other pairs of stations. In each case, find the quickest and the slowest journey times. © hamilton-trust. org. uk 14 Year 5

Measures and Data Read timetables using 24 -hour clock Calculate time intervals Objectives Day 3 Read timetables using the 24 -hour clock. Calculate time intervals. © hamilton-trust. org. uk 16 Year 5

Day 3: Read timetables using the 24 -hour clock; Calculate time intervals. North Yorkshire Steam Railway runs steam trains from Pickering across the moors to Whitby on the coast. Hikers can get off on the moors to go walking, or holiday-makers can get the train to the seaside at Whitby. Write ringed times as 12 -hour times. © hamilton-trust. org. uk 17 Year 5

Day 3: Read timetables using the 24 -hour clock; Calculate time intervals. A family want to catch the first train from Pickering to Whitby, and catch the last train back so they can have a full day at the seaside. We’re going to find out how long they can spend in Whitby. © hamilton-trust. org. uk 18 What should we mark on the time-line? Year 5

Day 3: Read timetables using the 24 -hour clock; Calculate time intervals. Arrive in Whitby at 10: 35. Leave Whitby at 17: 30. They can stay in Whitby for 6 hours 55 minutes. 25 mins 10: 35 6 hours 11: 00 30 mins 17: 00 17: 30 6 hours + 25 mins + 30 mins = 6 hours 55 mins © hamilton-trust. org. uk 19 Year 5

Day 3: Read timetables using the 24 -hour clock; Calculate time intervals. A group of walkers is staying in Whitby. They want to do a walk on the moors, starting at Newtondale and finishing at Grosmont. This walk should take about 4 hours. Look at the timetable and give the group some travel advice. © hamilton-trust. org. uk 20 Year 5

Challenge © hamilton-trust. org. uk 21 Year 5

Measures and Data Read timetables using 24 -hour clock Calculate time intervals Objectives Day 4 Given a time delay, count on to find new train departure and arrival times. © hamilton-trust. org. uk 22 Year 5

Day 4: Given a time delay, count on to find new train departure and arrival times. The 14: 48 to Birmingham New Street is running approximately 37 minutes late as a result of sheep on the line near Worcester. How many minutes do we need to add? How many minutes to the next hour? 25 mins 12 mins 14: 48 How will we calculate the new departure time? 15: 00 15: 25 So this is the time that the train is now expected to depart. © hamilton-trust. org. uk 23 Year 5

Day 4: Given a time delay, count on to find new train departure and arrival times. The train to Gloucester, due to depart at 18: 52, is running approximately 45 minutes late as a result of signalling problems. Calculate the new departure time. The 13: 53 to Penzance is running approximately 1 hour and 15 minutes late as a result of stormy weather conditions causing flooding. Calculate the new departure time. © hamilton-trust. org. uk 24 Year 5

Measures and Data Read timetables using 24 -hour clock Calculate time intervals Well Done! You’ve completed this unit. Objectives Day 1 Calculate time intervals using the 24 -hour clock Day 2 Read timetables and calculate time intervals using the 24 -hour clock Day 3 Read timetables using the 24 -hour clock. Calculate time intervals. Day 4 Given a time delay, count on to find new train departure and arrival times. © hamilton-trust. org. uk 26 Year 5

Problem solving and reasoning questions True or false? • • • 13: 40 is twenty to two in the afternoon. Midnight is 00: 00 Midday is 12: 00 on 24 hour clock 19: 15 is quarter past 7 in the morning. 1 hour after 15: 00 is six o’clock pm. Calculate how long it is between… • • • 13: 40 and five to 5 in the afternoon Quarter to midday and 17: 23 Five past midnight and ten to midday If each bus is 40 minutes late, write its new arrival time. (i) No. 31 bus due at 12: 55 (ii) No. 22 bus due at 13: 04 (iii) No. 15 bus due at 14: 44 The number 4 A bus arrived 27 minutes late at 00: 14. What time was it due? © hamilton-trust. org. uk 27 Year 5

Problem solving and reasoning: Answers True or false? • 13: 40 is twenty to two in the afternoon. True • Midnight is 00: 00 True • Midday is 12: 00 on 24 hour clock True • 19: 15 is quarter past 7 in the morning. False - it is in the evening • 1 hour after 15: 00 is six o’clock pm. False - it is four o’clock pm Calculate how long it is between… • 13: 40 and five to 5 in the afternoon 3 hours 15 minutes • Quarter to midday and 17: 23 5 hours and 38 minutes • Five past midnight and ten to midday 11 hours and 45 minutes. An ENL jotting can help with these calculations, which are probably best-solved by counting up from the earlier to the later time. If each bus is 40 minutes late, write its new arrival time. (i) No. 31 bus due at 12: 55 13: 35 (ii) No. 22 bus due at 13: 04 13: 44 (iii) No. 15 bus due at 14: 44 15: 24 Answers of 12: 95 and 14: 84 for (i) and (iii) respectively suggest child had added the minutes but forgotten that there are only 60 mins in an hour. The number 4 A bus arrived 27 minutes late at 00: 14. What time was it due? 23: 47 © hamilton-trust. org. uk 28 Year 5