What’s My Rule?
http://illuminations.nctm.org/lesson.aspx?id=1593
Learning Objectives
Students will:
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Sort and classify objects using multiple attributes and values
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Identify and name sorting rules.. attributes
Common Core State Standards – Mathematics
Ask me to
explain the kids
as the game
pieces
Ask me
to explain the
one
difference
train!
Ask me to
explain the
Boolean
People!
-Kindergarten, Measurement & Data
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CCSS.Math.Content.K.MD.B.3
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Classify objects into given categories; count the numbers of objects in each category and sort the categories by
count.
Grade 1, Geometry
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CCSS.Math.Content.1.G.A.1
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Distinguish between defining attributes (e.g., triangles are closed and three-sided) versus non-defining attributes (e.g., color, orientation,
overall size) ; build and draw shapes to possess defining attributes.
Common Core State Standards – Practice
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•
•
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CCSS.Math.Practice.MP1
Make sense of problems and persevere in solving them.
CCSS.Math.Practice.MP4
Model with mathematics.
What’s My Rule?
Attributes can be size, color, shape.
Values can be small, medium, large
(size) red, blue, green (color) or
round, square, triangular (shape)
This activity is designed to help students recognize patterns,
and classify and sort objects based on what they do or do not have in common. Depending on your students' skills,
you may want to begin by modeling the game with an easy example for a small group of students.
http://www.sedl.org/afterschool/lessonplans/index.cgi?show_record=92
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Explain that you are thinking of a rule -- one thing that students have in common -- that you want students to
guess. You will put anyone who meets your rule in a small group to your right, and anyone who doesn't in a
small group to your left.
Choose a rule that is easy to recognize, such as students who are boys, or students who are girls. Remember
not to say what your rule is; you want students to guess.
As students take turns nominating others, ask guiding questions that will help students think about patterns
and classification:
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What made you choose that person?
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What does your choice have in common with others in the "meets my rule" group?
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How is your choice different from the students in the "meets my rule" group?
Once students understand the game, let them take turns coming up with a rule (students who are wearing
red) and challenge them to come up with new and more challenging rules.