Students will investigate fractions by creating fraction strips.
- Eating Fractions, by Bruce McMillan; ISBN 0-590-43771-2
- Give Me Half, by Stuart J. Murphy; ISBN 0-066-446701-5
- The Hershey's Milk Chocolate Bar Fractions Book, by Jerry Pallotta; ISBN 0-439-13519-2
- Cook-a-doodle-doo!, by Janet Stevens and Susan Stevens Crummel;
Background for Teachers
With students, make fraction strips (1-1/2 inch) from 9" x 12"
construction paper in red (whole), orange (half), yellow (thirds), green
(fourths), blue (sixths), and purple (eighths) for each student using rulers
and black crayons.
Intended Learning Outcomes
1. Demonstrate a positive learning attitude toward mathematics.
2. Become mathematical problem solvers.
Invitation to Learn
Who can tell me what a fraction is?
A fraction is a part of a whole.
Today we are going to do some investigating with fractions. But
before we do, we need to make our own fraction strips.
- Pass out the 1-1/2" x 12" strip of red construction paper. Have
the students write 1 whole on the strip with a black crayon.
- Pass out the 1-1/2" x 12" strips of orange construction paper.
Measure or fold in half. (Half of 12 inches is what?" Six
inches.) With a black crayon write 1/2 on each of the two strips.
Cut strip in half.
- Pass out the 1-1/2" x 12" strips of yellow. Divide 12 inches
into thirds (4") and mark the strips with a black crayon. Write
1/3 on each piece and cut strip on lines.
- Pass out the 1-1/2" x 12" strips of green construction paper.
Have the students divide into fourths (3"). Write 1/4 on each
piece and cut strips on the lines.
- Pass out the 1-1/2" x 12" strips of blue construction paper.
Divide into sixths (2"). Write 1/6 on each piece and cut the strip
on the lines.
- Pass out the 1-1/2" x 12" strips of purple construction paper.
Divide into eighths (1-1/2"). Write 1/8 on each piece and cut on
the lines to make strips.
- Students will use the strips to play Order the Fractions and Fraction War.
- After playing the games, discuss how the students knew which
fraction was larger, 1/2 or 1/3? They should discover that the
larger the denominator, the smaller the piece.
Cook-a-doodle-doo! by Janet Stevens and Susan Stevens Crummel
Parents can cook the strawberry shortcake by doubling the recipe
and adding fractions.
- Have students complete My Book About Fractions to
assess whether they gained conceptual understanding of fractions.
- With two dice, have the students roll fractions—red = numerator,
green = denominator—and draw pictures to illustrate fraction of a
set or whole.