Circular Coasters
Students become more open minded and appreciative of diversity through
creating Character Cards that focus on the contributions made by people of
different races
Curriculum/State Standards
MA.B.1.3.1-– Students will use concrete
and graphic models to derive formulas
for finding perimeter, area, surface area,
circumference and volumes of two and
three-dimensional shapes.
MA.A.3.3.2 (1) – Students know the
appropriate operations to solve realworld problems involving whole numbers,
decimals and fractions.
Overview
circle and how to find its area, diameter,
and circumference.
Day 1: Students will be introduced to
the circle and be taught how to find the
diameter and circumference.
Day 2: Students will learn how to find
the area of a circle. Give the students
opportunities to practice.
Day 3:
• Introduce Lesson
o Discuss Circles
o Explain Activity
Students had to make circular coasters
using molds, mosaic tiles, and indoor
cement. Once they did this then they
would find the area, circumference and
diameter of their coaster.
Day 4:
• Review circles.
• Students will receive their finished
coasters.
• Students will find the radius of their
coaster using a ruler. This will be done
as a class as all coasters will have the
same radius.
• On their own, students will complete a
questionnaire about their coaster. (See
appendix 1)
• Students will then be able to paint their
coasters and take them home.
The student will find the area of a circle.
The student will find the circumference of
a circle.
The student will find the diameter of a
circle.
Materials
indoor cement, mosaic tiles, circular
molds, paper, pencil, ruler, calculator
Readiness Activity
• Students will make circular mosaic
coasters out of indoor cement and
mosaic tiles.
• Once students have finished this they
will work on a worksheet about circles
Assessment
If students are able to answer questions
on their questionnaire correctly it will
show understanding of the material.
Students need to be familiar with the
THIS WINNING PROJECT IDEA SUBMITTED BY:
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Natasha Bell
Parkway Middle School of the Arts
Lauderhill, FL
GRADE LEVEL
Strategies/Activities
This project was highly effective. It
served as an enrichment lesson for
students as they closed out the unit
on circles. Students enjoyed the
hands on aspect of the project and
the incorporation of art spoke to those
students who are artistic. It also showed
teachers that math could be taught using
a variety of materials and not just the
traditional math manipulatives.
Objectives
6-8
4
DAYS
$360
TOTAL BUDGET
Circular Coasters
....continued....
This lesson is intended as
enrichment for students as they
have already been taught about
circles in their regular math class.
Culminating Activity
Completing a questionnaire about
the coasters and writing a letter
in which they have to pretend
they are their coaster and write
to their teacher explaining how
they were made and how to find
their area.
Evaluation Method
Students will complete the
worksheet created for this activity
(see Appendix 1)
Appendix 1
Circular Coasters Worksheet
Answer all questions
Name: ___________________
Teacher: __________________
Date: ____________________
The radius of your coaster is 5.4 cm. Use this information to answer all questions
1.
What is the diameter of the circular face of your coaster?
_________________________
2.
What is the circumference of the circular face of your coaster?
_________________________
3.
Find the area of the face of your coaster? ___________________
4.
Pretend you are your coaster and write a letter to your teacher explaining how you were made.
Also tell your teacher how the students can find the area of your circular face.
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________