Page 22 - steps 3b.pdf
P. 22
DRM20
~ Functions II II II II II II II II II 3b:7
What's the function? An activity for 2
You need: one calculator
o In secret, Player A decides on the function.
o Still in secret, Player A sets the calculator
to become a function machine, like this:
Press QJ [IJ EJ EJ 0 ~
and passes the calculator to Player B.
o Player B chooses and enters an input number, then presses [ = ).
The calculator gives an output number.
o Player B works out the
function Player A chose by
entering different input 0
numbers, then pressing O.
o The players take turns to decide on the function.
o Have at least 5 turns each.
Dealing with inputs and outputs from function
© HarperCollinsPublishers Ltd 1997 STEPS 3b Differentiation Pack machines.
