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Cookie Fractions Fun!
Students will be able to identify and describe fractions.
- Introduce the lesson by telling students that a FractionIs a numerical quantity that is not a whole number.
- Show some examples on the board.
Explicit Instruction/Teacher modeling(15 minutes)
- Pass out 2–3 cookies to each student.
- Draw pictures of the cookies partitioned in halves, thirds, and quarters on the whiteboard for students to refer to throughout the lesson. For example, draw a half circle when you ask the students to show you 1/2 of a cookie.
- Ask the students to break the cookies into halves, quarters, and thirds. Ask them to show you their newly created cookie pieces. Observe students and guide them as necessary.
- Instruct students to eat two-thirds of a cookie, three-fourths of a cookie, and one-half of a cookie.
Guided practise(15 minutes)
- Put students in partnerships and pass out paper, coloring materials, rulers, and small cups to each pair. Explain to the students that now they will practise drawing fractions on a piece of paper.
- Write 1/3, 2/3, 1/4, 1/2, 3/4, and 1/8 on the whiteboard.
- Explain to the students that first they should draw a cookie or circle. Model how to trace the cup to create a perfect circle. Next, tell students that they will try to partition the whole circle/cookie into parts depending on what fraction they choose first. Encourage students to discuss their ideas with their partners.
- Model an example or two using the ruler to help students grasp how to create the straight lines to partition their shapes.
- Rotate around the room and observe students as they complete the task.
Independent working time(20 minutes)
- Hand out the Cookie Fractions #5 worksheet to the students.
- Allow students to work on the worksheets independently and provide support as needed.
Enrichment:Ask students to draw fractions using other shapes. See how much they understand the concept.
Support:Continue working with the students independently. Ask them to draw fractions of circles. If they are still unsure of the concept, work with them using cookies.
- Draw a T-chart on the whiteboard. In the left column, partition shapes into halves, thirds, and fourths. Provide some non-examples in the mix, too. In the right column, write down the corresponding fractions (e.g. 1/2, 1/3, 1/4, 3/4, 2/4, etc.)
- Ask students to come up to the whiteboard to match the shapes in the left column to the fractions in the right. Provide prompting questions to elicit deep thinking.
- Observe students as they complete the activity and notice students who understand the concept and students who need more support.
Review and closing(20 minutes)
- Review that fractions are a numerical quantity that is not a whole number.
- Read If You Were a FractionTo the class.