What's the Rule?
I made a magically machine today.
When you put a number into the box,
something happens
& a new number comes out!
We can go forward and backward with it!
If you know the number that comes out but not the numberr that went "in"...
Then you do the opposite of the rule.
100 goes "in" (-50 rule box) then a 50 comes "out"
100-50 = 50
? goes "in" (-50 rule box) then a 20 comes "out"
? -50 = 20
do the opposite:
20 + 50 = 70
70 -50 = 20
So cool!!!
Some students made their own "Rule Box" to bring home!
Then you do the opposite of the rule.
100 goes "in" (-50 rule box) then a 50 comes "out"
100-50 = 50
? goes "in" (-50 rule box) then a 20 comes "out"
? -50 = 20
do the opposite:
20 + 50 = 70
70 -50 = 20
So cool!!!
Some students made their own "Rule Box" to bring home!
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