Secret Decoder

This is a super fun assignment for all the secret agents out there. Time to put your sleuthing skills to work.
HOW TO MAKE THE DECODER WHEEL:
1. Cut out the circles below and stack in order from the number 1 wheel on the bottom, then number 2 wheel and finally
number 3 wheel on the top.
2. Attach the 3 discs by carefully poking a round brad through the middle of all three wheels.

HOW TO USE DECODER WHEEL:

B C
Z A
1. Pick a letter on the outer wheel and a number in the
inner circle - this is your key (ex. M21). Turn the
inner wheel so that the number (21 in our
example) lines up with the out wheel
Y D
letter (M in our example). On our wheel
21 also corresponds with R in the

E
X
shaded section. Dont move the wheels
now, keep them in place.
T U V W

F
2. First, write down your message.
No numbers (write them out),
and no punctuations

G H I
3. For each letter of your
message, find that character on
the outer wheel, and write
down the letter that is exactly
beneath it on the inner wheel
until your message is complete.
4. To read the encrypted message,
get the key from the message
sender and align the wheel. For each
S

J
letter of your message, find that
character on the inner wheel, and
write down the letter that is exactly
R

K
above it on the outer wheel.
Q L
M N
T U
R S
O P
Q V
22 23 2 4
21 25
20
W
P

26
19
L M N O

X
15 16 17 18

E CRET
Y Z A B
2

S
3
4
4

R
1

D
K

13

EC
6

E
12
7 OD
C
J

8
9 10 11 D
E F I
G H

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