Transformations can be so difficult for students to visualize. It’s really important for middle and high school students to engage in hands-on activities that facilitate a concrete understanding of the topics, without simply memorizing some rules. Here are four strategies to consider when planning your transformations unit.
Consider introducing the topic using
manipulatives. To be able to hold a
polygon and then move it, flip it, or rotate it can make a big difference for
students. They don’t have to “envision”
something happening to the polygon, they get a concrete answer to their “what
happens if” questions. Try this free lesson in your class:
Allow students to discover the big
ideas. A few months ago I was working as
a math interventionist with a small group of eighth graders who were learning
transformations. I asked a few questions
at the start of the lesson to gauge what they already knew. They could recall some of the “rules” and
“formulas” for what happens to coordinates given different transformations, but
they didn’t really remember which rules pair with which transformations. The discovery lesson that I brought was a
perfect match for their needs. We
practiced rotating polygons around the origin 90, 180, and 270 degrees. However, we accomplished this not by stating
some rules and trying to follow, but instead by turning our paper, visualizing,
and using logic to work our way through the problems. The goal of this lesson was to make meaning
out of the rules that we summarized at the end.
My discovery lessons for Rotations, Reflections, Translations, and
Dilations can be found in my store.
Engage students in hands-on learning. Once students have played with the ideas and
taken notes on the concepts, allow plenty of time to practice using different
activities and strategies. Task cards
are great because they allow students to focus on one transformation at a
time. Card sorts allow students to work
collaboratively to divide transformations into categories. Cut and paste activities are also really
engaging for students! Also, click here to
read about how Brigid from Math Giraffe uses plastic plates to engage her
students in hands-on learning… such a neat idea!
And, of course, my favorite…
play a game! My students and I love to
play Old Math Guy to practice matching graphs with the type of transformation
shown. Visit this post to learn more
about how to play Old Math Guy in your classroom.
Thanks for reading! You can also scoop up a discounted bundle of all
of the resources mentioned in this post here.
Now it’s your turn to join the conversation! What are your favorite activities when
teaching transformations? Any tips or
tricks to share?
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