Adam has 60 stickers at first.
Adam gives away 20 stickers.
How many stickers are there left?
- Which model should we draw?
(1) Model Part-whole
(2) Model Comparison
- Is the total given?
(1) Yes
(2) No
- Who gets the shorter bar?
(1) At first
(2) Adam gives away
- Number of stickers left = _____
(a)
Which model should we draw?
(1) Model Part-whole
(2) Model Comparison
We should draw a (1) Model Part-whole.
(b)
Is the total given?
(1) Yes
(2) No
(1) The total is given.
(c)
Who gets the shorter bar?
(1) At first
(2) Adam gives away
20 stickers is less than 60 stickers. So, (2) 'Adam gives away' gets the shorter bar.
(d)
Number of stickers left
= 60 - 20
= 40
Answer(s): (a) 1; (b) 1; (c) 2; (d) 40