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Dana Prussman, Casey Pletz
Topic: Rounding
Grade Level: 2nd Grade
"Rounding at the Grocery Store"
Objective: Students will explore the use of rounding to
the nearest 100th place, by rounding to the nearest dollar amount
when using the grocery store items and given a set amount of money.
Materials:
- Several grocery store items that are labeled with a dollar
amount
- Fake money
The Lesson:
A. Anticipatory Set: Discuss with students what rounding
is, and when they would use it. Get the students thinking about
rounding by having them give examples of when they think they
could use it in their day to day life.
B. Conceptual Development:
- Hold up several different price tags and have students explain
how they would round to a
particular price and why.
- Discuss when they would round up to the nearest dollar,
and when they would round
down to the nearest dollar amount using example price tags.
C. Practice/Activity:
A table of grocery store items will be displayed. Each item will
be priced. The students
will be divided into small groups; each group will be given a
specific dollar amount with
which they will purchase the items. Each group of student will
work together using
rounding to ensure that they have enough money to cover the cost
of their selected items.
D. Assessment:
Students will be assessed informally as they explain to the rest
of the class what rounding
methods they used in order to stay within the set dollar amount.
E. Closure:
After each group explains their rounding method, discuss the differences
in the techniques
that each group used.
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