Question
Adam has 20 stickers.
He lacks 10 stickers.
How many stickers does he need altogether?

  1. Which model should we draw?
    (1) Model Part-whole
    (2) Model Comparison
  2. Is the total given?
    (1) Yes
    (2) No
  3. Who gets the shorter bar?
    (1) What Adam has
    (2) What Adam lacks
  4. Number of stickers that Adam needs altogether = _____
4 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

(c)

Click button first when a symbol is required. X

(d)

Click button first when a symbol is required. X

Adam has 20 stickers.
He lacks 10 stickers.
How many stickers does he need altogether?

  1. Which model should we draw?
    (1) Model Part-whole
    (2) Model Comparison
  2. Is the total given?
    (1) Yes
    (2) No
  3. Who gets the shorter bar?
    (1) What Adam has
    (2) What Adam lacks
  4. Number of stickers that Adam needs altogether = _____