Number · Units, money & time
Chapter 1 · 3
The idea
Time, clocks and timetables
Read and write times on the 12-hour and 24-hour clocks, work out how long something takes by counting on, add time on and count back from a deadline, cross midnight safely, read a bus or train timetable to find the next or latest train, and count days and dates on a calendar.
A full journey — read it, play with it, work it, then earn real exam marks. Everything stays on the timeline below.
In this lesson — start anywhere
Number · Units, money & time
Time, clocks and timetables
Read and write times on the 12-hour and 24-hour clocks, work out how long something takes by counting on, add time on and count back from a deadline, cross midnight safely, read a bus or train timetable to find the next or latest train, and count days and dates on a calendar.
Why it works
A clock face can't tell morning from afternoon
Ellie is going to the seaside by train. Her ticket says the train leaves at 14:35. Her phone says 2:35 pm. Are these two different trains? No. They are the same time, written on two different clocks.This clock shows 2:35. But the hands point to 2:35 twice a day: once in the night and once in the afternoon. On the 12-hour clock we add a label: am means between midnight and noon, and pm means between noon and midnight. The 24-hour clock needs no label. After noon it just keeps counting, so 2:35 pm is 14:35.Keep reading — free
The rest of the explanation, plus 5 worked examples you step through move by move.
Start freeTakes a minute — no card.