Saturday, January 12, 2013

Introduction to Coded Messages

Welcome back, Math Spy!  I hope you enjoyed a little break. 
To train for this next mission, you need to learn about function tables.


x
0
1
2
3
4
5
6
7
8
9
10
11
12
y
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Imagine the function table is like a machine that changes numbers in a predictable way.  You put in the number at the top (on the line marked x) and the number at the bottom is the answer to that function.

Here is an example of a function table where the function is
x + 1 = y.  For each number in the x row, I added one to get the number in the y row.


x
0
1
2
3
4
5
6
7
8
9
10
11
12
y
1
2
3
4
5
6
7
8
9
10
11
12
13
 
 
 
 
 
 
 
 
 
 
 
 
 
 

In the Math Spies version of function tables, you fill in the missing numbers in the pattern.  Next you substitute the letter under the answer for the corresponding number in the code box. 
Click here to solve the first coded message.

Click here for a blank function table printable.

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