Making a
model of a problem can help you to understand and "see" what the
problem looks like.
T
To model the problem you can use:
objects
representations
Let's look at some examples.
Abby had 5 fish in her aquarium.
She went
to the pet store
and bought 6 more.
How many fish does
she
have now?
objects
representations
+
Both of the models
help you to see that you
must combine the 2 groups to obtain the sum.
5 + 6 = 11 fish
Liz bought 6
books last month at the book fair. She finished reading 4 of
them, and gave the 4 books to Ben .
How many books
does Liz have left?
objects
representations
Both of the
models help you to see that you
must take 4 from 6 to find the difference.
6 - 4 = 2 books
Bonnie
played golf yesterday.
She had 4 strokes on each of the first 3 holes and 3 strokes on
the 4th hole.
What is her score through the first 4 holes?
objects
+
+
representations
+
+
+
Both of the
models help you to see that you
must combine the 4 groups to obtain the sum.
objects
Remember: