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9 September 2015


Fermez la boîte!

Today, our class started a new game called "Fermez la boîte", a version of the popular game, Shut The Box. We are using this as practice using number lines (which is our main focus for September), as well as addition facts and making big numbers out of two smaller numbers. Click {Here} to access the Wikipedia version of the instructions. 

Game Materials:
-Number line with the numbers 1 to 12
-Two dice

First, we made a number line on our board with the numbers 1 to 12. The goal of our game is to cross off all of the numbers, or as many as possible. The rules are that you can only use a number that is available, since a crossed-off number cannot be reused.

We start with our number line that looks like this…

1           2          3          4          5          6          7          8          9          10         11           12

We roll our two dice, and imagine our dice look like this. With a 4 and a 4, our total number we are working with is 8.

From our number line, we can cross off 8, 1 and 7, 6 and 2 and 5 and 3. Our remaining numbers to work with for our next roll are 9, 10, 11 and 12

1           2          3          4          5          6          7          8          9          10         11           12



In our next roll, imagine we roll a 6 and 4, giving us a total of 10. We can then cross off 10, but all other combinations that make 10 are already used.

1           2          3          4          5          6          7          8          9          10         11           12

If we try to roll again, imagine we roll a 3 and a 2, which gives us 5. Since 5 and all other combinations that make 5 are used up, our turn is done. We now add up all remaining numbers to find our total score

9 + 11 + 12 = 32

We want to get as LOW a final score as possible, which would be zero if we are able to cross of every number.

We are doing this game as a whole class, and will be expaning to playing in a 4-player game, where the person with the lowest score wins.

Stay tuned for this game coming home with your child on Friday!

Click {Here} for the link to the page to use at home! You can also find online dice to use at home {Here}





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