Friday 7 September 2018

Understanding the clock face

We've covered telling the time to the hour and half past the hour on both analogue and digital clocks. Before moving on to quarter past/to and the intervals between, I wanted the girls to understand and be familiar with the fact each of the numbers 1-12 on the clock represents 5 minutes/seconds. Rather than simply tell them this, I thought it would stick better if they worked it out themselves!

They already knew there are 60 minutes in 1 hour from becoming familiar with digital clocks in our everyday life (e.g. the clock on the oven which we've been asking them to read since they were 3!) so I began by asking: If there are 60 minutes in an hour and it takes 1 hour for the minute hand to go all the way round the clock, how many minutes fit into each of those big numbers 1-12? Sounds like a mouthful, but not so complicated illustrated on a clock at the same time. 😂

They understood they needed to share the 60 minutes between the 12 numbers, so it was division, but they couldn't work it out in their heads! I asked them if they wanted to use the blocks to help and they said yes. 😏

I took out the numbers 1-12 from our Melissa & Doug jigsaw and asked the girls to arrange them to look like a clock... So they knew they needed to put them in a circle but it was a challenge to get it looking right lol. They started out with a triangle, then one commented the 6 needed to be in a straight line under the 12, and eventually they ended up with a wonky oval.



Next, I gave them the tub of multilink cubes and asked how many did they need to have one for each minute? 60... And what did they know about their cubes and the different colours? There are 10 of each colour... So how many colours did they need to use? 6! There are two of them, so how many colours did they need to get each? 3! MashaAllah. They put the 60 cubes in the centre of their clock.

Now for the sharing part... If they put the same amount of cubes on each number, how many cubes would each number end up with? I prompted them by saying to first try giving 1 cube to each number.



They then continued sharing out the cubes so they all had 2, then 3, then I stopped them and asked them to estimate how many more times they thought they'd be able to go round the clock... One guessed 8, the other 11. 😂 Ok. So I let them go round again then stopped them again to see if they wanted to change their estimate. They both laughed and one said she thought only one more time after this so she should have estimated 2 to begin with - then the other agreed and exclaimed she thought they were all going to end up with 5 cubes each. 👍
We equated this back to the original question: if there are 60 minutes in an hour, how many minutes are there in between each number on the clock? 5! Then we counted in 5s round the clockface to check.


Finally, I told them to look at the real clock so they could count how many seconds there are in a minute - count how many times the second moves for it to go all the way round the clock, using 12 as a starting point. I asked them if there are 60 seconds just as there are 60 minutes, how many seconds do they think are in between each number? 5! Then we counted 5 seconds between two of the numbers to check.



Later on in the day, after a break, they completed the above worksheet to consolidate what they'd learnt. Taken from both *** and *** [edit to add titles]

After a few days, one of the twins asked if it was five past six because the big hand was on the 1... I said yes. Throughout the day she kept asking if it was so-and-so past, getting it right; I asked how she knew and she said because she was counting in 5s for each number! Masha'Allah. Within the next couple of days her sister had caught on too - so now they can both tell the time to the hour, half past and x minutes past the hour. 💪

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