Introduction to Transformations Marbleslides!

I just made my first Marbleslides in Desmos!  It was incredibly easy, and the students said it was a really fun way to learn.

This Marbleslides activity introduces students to transformation form and lets them practice moving graphs around with Marbleslides (SUCCESS!!) using the new parent graphs they just learned.  My students know transformation form with linears, y = a(x – h) + k, but have not moved any other graphs around yet.  (For this activity I used the absolute value, quadratic, square root, and cube root functions.)

I have two goals with Desmos this year.

  1. Shorten my Desmos Activity Builders, so that I have time in class to practice with the students outside of Desmos.
  2. Make worksheets to accompany my Desmos Activity Builders, so the students can have notes to look back on.

I felt this activity accomplished both, and my students really seemed to enjoy it.  I have provided the activity and the worksheet for you to try.  I would love feedback!

Desmos Introduction to Transformations Marbleslides

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Geometry Transformation Foldable – Translate, Reflect, Dilate

I only had about a week to cover transformations so I focused on translations and reflections, and then briefly covered dilations.  I used coordinate changes, where (x,y) transformed to (x +2, y-1) or (-x,y) as I feel that will benefit them in later Algebra classes as well.  Michael Pershan’s created an excellent Tool for Exploring Transformation Rules using  Desmos that I love.  I gave my students the link and let them play with it.  Screen Shot 2015-02-16 at 2.11.57 PM

Then I had them take out the +5, and +8 so they only had (x,y).   Screen Shot 2015-02-16 at 2.05.39 PM

I challenged them to make the house FATTER.  It took them a while to figure out they had to multiply a number instead of add.  After they were all able to make very fat houses asked them to make it skinner, taller, and shorter.  After that, I asked if they thought they could turn it upside down.  The students enjoyed making the house different sizes and moving it around.  But the best benefit came days later when I only had to mention the house to remind them how to differentiate between the translations and dilations in future work.

Here is the link to the Transformations foldable I created, using Kuta software for some of the graphs.