How to play
:
Think
of a
three digit number (example : 615)
Ask a student to guess a three digit number. The student perhaps says 357
Write this number
in the table below.
You then write 1 in
the
Correct
digit, wrong place because the number
submitted by
the student has one
correct digit that is in your number
(615)
but it is in the wrong place.
Using this visible information, ask another student to guess another
three digit number. The student guesses perhaps 485.
Write
this
number in the table below.
You
then
write 1
in
the
Correct
digit, correct place because the number
submitted by
the student has one correct digit that is in your number
(615)
and it is in the correct place.
Using this visible
information,
ask another student to guess a three digit number. The student guesses
perhaps 265.
Write
this
number in the table below.
You
then
write 1
in
the
Correct
digit, correct place column
and 1
in the Correct
digit, wrong place column because the
number
submitted by the student has a correct digit (5)
that is in your
number (615)
and it is in the correct place and also the student has
guessed a second digit (6)
which is in your number but is not in the correct place.
Practice with your students. Have fun!
Three
digit number 
Correct
digit, wrong place 
Correct
digit, correct place 
357 
1 
0 
485 
0 
1 
265 
1 
1 
. 
. 
. 
