Created on: May 28, 2009

Website Address: https://library.curriki.org/oer/Lesson--2-More-About-One-Half

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.

**Group Size:** Whole Class

**Learning Objectives:**

Students will be able to:

- Identify instances in their everyday lives that use fractions.
- Show fluency with one-half by dividing whole objects and sets of objects into one-half.

**Problem of the Day** (see attachment), chart paper, markers, overhead projector, classroom objects such as crayons, glue sticks, and pencils

**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.

- Write the number "1/2" on the board. Ask students:
*Do you remember what this is called?* - Tell Students:
*Remember, yesterday we divided a pizza into half. A pizza is just one thing. Today we divided pieces of candy into half. The candy was a group of objects. Fractions can be for one thing, like the pizza, or for a group of things, like the candy.* - Tell Students:
*Let’s continue practicing how to make one-half.*Hold up a group of six glue sticks and tell students:*I have six glue sticks. I want to give half to Student A and half to Student B.*Call two students to the front of the room. Have them help you divide the objects into half. - Ask students:
*How many glue sticks are in each half? How do we know they are each half?*Elicit response: Both students have three glue sticks. - Hold up a group of eight crayons. Then hold up a group of ten pencils. Follow the same procedure as above for each group of objects, ensuring that students understand each group must be equal to make half.
- Tell students:
*Now we understand that we can make one-half from a single object or from a group of objects. Let’s think about fractions that we see everyday.*Display chart paper and label the top “Fractions Around Us”. Start the list with pizza. Then ask students to come up with other objects they can divide into fractions. - Keep the list on display in the classroom for the remainder of the fraction unit.

**Assessment:**

Teacher should monitor student participation to ensure all students are participating.

**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.

- Communicate their mathematical thinking coherently and clearly to peers, teachers, and others.
- Recognize and apply mathematics in contexts outside of mathematics.

Lesson2Resources.FunwithFractions.pdf |