Cracked Clock
A clock broke into two pieces. The numbers on each of the pieces add up to the same total. Draw a diagram to show how the clock cracked
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"Find the starters wonderful; students enjoy them and often want to use the idea generated by the starter in other parts of the lesson. Keep up the good work" *Ruth Seward, Hagley Park Sports College
"We think that this was very good. We liked the clock, in fact we thought it was a cracking starter! Y8 set 1 Rawthorpe High School, The Cushtie Krew
"The question can be extended to 'the clock is broken into three pieces with equal sum of 26 -- piece one contains numbers 11, 12, 1, and 2; piece two contains 3, 4, 9, & 10; the rest is piece three'. Sue, St Albans
"This problem also works by breaking the clock into 3 pieces and 6 pieces. The sum of all the numbers around the clock (1 + 2 + 3...10 + 11 + 12) equals 78. 78 is divisible by 3 and 6. " Russ Skinner, Winnipeg, MB
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Keywords: Starter
| Arithmetic
| Problem Solving
Tuesday, May 02, 2006
Maths rules, Cushtie!"
Thursday, May 24, 2007
Equally, it can be broken into 6 pieces with an equal sum of 13 -- piece one has 12 and 1; piece two has 2 and 11; piece three 3 and 10."
Thursday, May 24, 2007
Thursday, May 24, 2007
Good, achieved the results I required
Satisfactory
Didn't really capture the interest of the students
Not for me! I wouldn't use this type of activity.
This starter has scored a mean of 4.3 out of 5 based on 16 votes.
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