Created on: June 23, 2009

Website Address: https://www.curriki.org/oer/Lesson--8-Comparing-Fractions-I

IN COLLECTION

Prior to beginning the lesson: (1) Photocopy the **Problem of the Day** onto transparency paper for the overhead projector; (2) Cut out and laminate **Vocabulary Cards** for display in the classroom; (3) Assemble **Fraction Circles** (1 per student); (4) Photocopy **Comparing Fractions Practice Sheet** (1 per student).

**Group Size:** Whole class

**Learning Objectives:**

Students will be able to:

- Compare fractions and explain why fractions are smaller or bigger than one another.
- Understand that bigger fractions have smaller denominators.

**Problem of the Day** (see attachment), **Fraction Circles** (see attachment), **Comparing Fractions Practice Sheet** (see attachment), *Gator Pie* by Louise Matthews, **Vocabulary Cards** (see attachment), overhead projector

**Procedures:**

Lesson Introduction: Display **Problem of the Day** on the overhead projector. Ask students: *What strategy should we use to solve this problem?* Guide them towards draw a picture. Solve the problem together as a class. Students can copy problem and solution into math notebooks.

- Distribute
**Fraction****Circles**and show students how to use them. - Tell students:
*I am going to read you a story. I want you to pretend that you are an alligator in the story. Every time the pie in the story is cut, I want you to use your Fraction Circle to show me how much of the pie you would get to eat.*Read the story*Gator Pie*out loud to students. - Pause while reading to ask students:
*How much of the pie would you get to eat? What is the fraction?*Call on a student to come write the correct fraction on the board. Repeat this questioning each time the pie in the story is cut. - When the story is finished, ask students:
*Did you get more or less of the pie as the story went on? Would you rather share with two people or with twelve people? What happens to the denominator?*Make sure that students understand as the denominator gets bigger, their share gets smaller. - Display
**Vocabulary Cards >**and**<**on the board. Review the meaning with students. - Use two fractions from the story to practice using > and <. For example, put "1/2" and "1/12" on the board and have students use > and < to show which piece of pie would be bigger. Continue with three or four more examples from the story.
- Tell students:
*Now you are going to get to try this on your own.*Distribute**Comparing Fractions Practice Sheet**to students and instruct them to fill in the blank with > or < for each problem.

**Assessment:**

Teacher should monitor student participation and independent work to ensure all students understand the concept.

**Benchmark or Standards:**

National Council of Teachers of Mathematics (NCTM) Number and Operations Standard:

- Develop a sense of whole numbers and represent and use them in flexible ways, including relating, composing, and decomposing numbers.
- Understand and represent commonly used fractions, such as 1/4, 1/3, and 1/2.

- Pose questions and gather data about themselves and their surroundings.

- Build new mathematical knowledge through problem solving.

Lesson8Resources.FunwithFractions.pdf |