|= 31||= 32||= ?||= ?|
Each traffic sign stands for a number. Some of the sums of rows or columns are shown. What numbers might the signs stand for?
[Teacher: Press the F11 key and hide the remaining toolbar to show the whole of this grid if it doesn't fit on your screen]
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|= 8||= 9|
|= 4||= 10|
Note to teacher: Doing this activity once with a class helps students develop strategies. It is only when they do this activity a second time that they will have the opportunity to practise those strategies. That is when the learning is consolidated. Click the button above to regenerate another version of this starter from random numbers.
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Teacher, do your students have access to computers such as tablets, iPads or Laptops? This page was really designed for projection on a whiteboard but if you really want the students to have access to it here is a concise URL for a version of this page without the comments:
However it would be better to assign one of the student interactive activities below.
Most of the picture sum puzzles shared on social media (including the one above) can be solved as linear equations. The following activity called Unbeknownst generates situations best solved using simultaneous equations. There are a number of different levels of difficulty and each level can be regenerated to produce a different puzzle. The link is here:
The answer to this puzzle is not 12. What is it?
The following puzzle has been doing the rounds on Facebook. I have tried to find the source of this image but have been unsuccessful. If you know where it comes from please let me know. No copyright infringement is intended.
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