Page 21 - steps 3b.pdf
P. 21
DRM lq
~ Functions - - - _ _ _ _ _ _ 3b:7
From zero and back again An activity for 2
You need: 0 - 20 number line
o Both players agree on a number up to 20.
o Player A decides how to get from 0 to their chosen number in 2 moves.
-rIO
~II ~ I I
I
I
I
o 2 3 4 5 6 7 8 q 10 11 12 13 14 15 16 17 18 1q 20
o Player B decides how to get from their chosen number back to 0 in 2 moves.
-II
I~
~+I--+I--~.~--~-+~~~~--~~~rl--I~~I--~I~I
~~5 6 7 8 q 10 11 12 13 14 15 16 17 18 1q 20
o The players complete this table, filling in their moves.
START FINISH
+5 +10 -4 -11
o ----.~ 5 • 15 • 1 1 • 0
o ----.~ • 17 • • 0
lq
12
20
18
16
e,-----------------,
Name Understanding simple inverse operations.
. Date
I
© HarperCollinsPublishers Ltd 1997 STEPS 3b Differentiation Pack
