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        Grades

        3-5

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        Part of Cyberchase
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        Introducing Non-Unit Fractions and Equivalence

        Students interpret fractions in which the denominator describes the number of equal parts and the numerator describes how many of those parts one has. They are also introduced to naming equivalent fractions by dividing a circle.

        Lesson Summary

        Overview

        Students are taught how to interpret fractions where the denominator describes the number of equal parts and the numerator describes how many of those parts one has. They are also introduced to naming equivalent fractions by dividing a circle. This Cyberchase activity is motivated by an episode in which the CyberSquad creates a recipe for an antidote to MotherBoard's virus.

        Grade Level:

        3-5

        Suggested Time

        60 minutes

        Media Resources

        Retrieving 2/5 of Electro-Root QuickTime Video
        Retrieving 2/8 of the Healing Stone QuickTime Video

        Materials

        The Antidote Handout
        Assessment: Level A
        Assessment: Level B
        Answer Key

        The Lesson

        Part I: Learning Activity

        1. Distribute The Antidote Handout .

        2. Read the following: "Hacker has given MotherBoard a virus, and now she is turning everyone green and mean. The CyberSquad is trying to find the ingredients to make the antidote, which is a medicine to counter an illness. In this video clip, Jackie and Inez must get 2/5 of the Electro-Root from the gorillas for the antidote, and leave 3/5 for them to use."

        3. Ask students to complete the handout.

        4. Tell the students that they will watch a video in which the CyberSquad tries to figure out how much Electro-Root they need. Ask them to compare their approach to the one in the video.

        5. Show the Retrieving 2/5 of Electro-Root QuickTime Video .

        6. Discuss and compare the answer in the video clip with the students' answers to the Electro-Root part of the handout.

        7. Tell the students that they will watch another video clip, in which Matt and Digit's task is to bring back 2/8 of the Healing Stone. Ask students to watch the video to see if their solution to the Healing Stone part of Handout 1 is the same as that of Matt and Digit's.

        8. Show the Retrieving 2/5 of Electro-Root QuickTime Video .

        9. Discuss and compare the answer in the video clip to the students' answers to the Healing Stone part of the handout.

        10. On the board, ask students how they answered the part of the handout about finding 1/3 of Hacker's wig gel. Draw their various solutions and discuss.

        Part II: Assessment

        Assessment: Level A (proficiency): Students are asked to match fraction names with pictorial representations of the fractions.

        Assessment: Level B (above proficiency): Students are asked to make pictorial representations of equivalent fractions.

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