Sometimes you
can justify an answer by using manipulatives.
Susan wanted to
count the money in her piggy bank, but she doesn't want to break
it open! What can she do?
Because
she knows she puts a quarter in her bank every week, and she
thinks she has used this bank for 10 weeks she can find an
answer without breaking her bank.
= $1.00
=
$1.00
=
$0.50
$1.00 + $1.00 +
$0.50 = $2.50
So using
manipulatives (the coins) Susan could count her money without
breaking her bank!
You can use different manipulatives, like counters or clocks or
number lines, to make sure your answer is correct.
