Bryan has 90 stickers at first.
Bryan gives Adam some.
Now, Bryan has 70 stickers.
How many stickers does Bryan give to Adam?
- 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) Has at first
(2) Has now
- Number of stickers that Bryan gives to Adam = _____
(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) Has at first
(2) Has in the end
70 stickers is less than 90 stickers. So, (2) 'Has in the end' gets the shorter bar.
(d)
Number of stickers that Bryan gives Adam
= 90 - 70
= 20
Answer(s): (a) 1; (b) 1; (c) 2; (d) 20