o The lesson will require 45 min. to 1 hour depending on
prior knowledge of students.
o The first 15-20 minutes are spent introducing the
concept of fraction comparison . Students are shown groups of fractions and class
discusses how they compare. Mini-lesson is done to show how to compare fractions
using common denominators and/or cross multiplication. Give students example of
real life situation. Would they rather have 5/7 or 2/3 of a candy bar. Have a
drawing of the two options. Ask their reason why. Can we tell by just a drawing?
What if the drawing is not accurate? How can we tell which piece is larger using
math ? Discuss common denominators and cross multiplication. How are the two
methods related? Discuss why cross multiplication works. Walk through more
examples as needed.
o The class activity will take approximately 30 minutes.
They will playa card game called Fraction War . It is best to work in pairs. The
students are given decks of cards with fractions written on them.
o Each student turns over one of their cards. The pair
will find which fraction is greater . The student with the larger fraction keeps
both cards. If the fractions are equivalent , the students will each turn over a
new card. The player with the highest fraction will then keep all the cards from
that play. The player with the most cards at the end of the game is the winner.
The challenge is for the students to use the two methods discussed to find the
larger fraction. Allow the students to continue playing as they are observed for
their understanding of the concepts.
o After the activity, students will reconvene and discuss
the game. The discussion can be guided towards what issues may have come out
during the activity.
o The immediate assessment will be based on observation of
the students in the class discussion and the activity.
o Extensions can be done by pulling in more real life
situations in which fractions must be compared.
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