Time
Key Stage: 1 ★★★
To play this 2-player game, start with theclock at 6 o'clock. You each may move the hands of the clock on by half an hour or by one hour. You win if you move the hands to 12 o'clock.
Stop the Clock is a motivating context in which children can develop their fluency with telling the time and calculating time intervals. However, the real challenge here is to find a winning strategy and, at the highest level, to be able to beat an opponent whatever the start time and whatever the time intervals.
This resource has comprehensive teachers' notes and resources, linked from the problem page. This includes possible approaches and key questions, as well as possible support and extensions.
The file attached is a HTML file, which, when opened, automatically redirects you to the problem on the NRICH website.
Key Stage: 1 ★★★
To play this 2-player game, start with theclock at 6 o'clock. You each may move the hands of the clock on by half an hour or by one hour. You win if you move the hands to 12 o'clock.
Stop the Clock is a motivating context in which children can develop their fluency with telling the time and calculating time intervals. However, the real challenge here is to find a winning strategy and, at the highest level, to be able to beat an opponent whatever the start time and whatever the time intervals.
This resource has comprehensive teachers' notes and resources, linked from the problem page. This includes possible approaches and key questions, as well as possible support and extensions.
The file attached is a HTML file, which, when opened, automatically redirects you to the problem on the NRICH website.
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