 | A few years back my students collaboratively made rotationally symmetrical lego designs. They filled our newly installed lego wall. Last year my third graders made falling animations over a rotating optical illusion. This year I hope to combine both ideas in a new way by having students make design again in legos then dynamically demonstrating rotation through animation. |
 Click image to read our article in School Arts |  Our original lego wall. Click to enlarge |
Using the DoInk Animation app to digitally rotate the lego designs not only extends the lesson digitally, it serves as an assessment to determine if the designs are rotationally symmetrical.
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Students can add their own photo over the rotating design using a size change to indicate falling. The 2nd tutorial below shows the steps for creating this project. It would also help you just rotate the masked lego design (like above) if you skip adding the figure.
Animated Rotation of Rotationally Symmetrical Lego Design
 | The lego design is masked into a circle and saved as a png using the superimpose app. The student pose and design are animated using DoInk Animation app. All the steps are shown in the tutorial below or here. |  |
Tutorials:
View my interview with Corey Engstrom of Teacher Tech Trials about this project below.
Students working:
Our Rotational Symmetry Lego Wall
-made completely by second graders using our collaborative method of taking a turn
Made physically & assessed digitally
After students made their lego plates, they used a digital image of it to do a test for rotational symmetry. They masked it into a circle using the Superimpose app then put it in the Do Ink animation app to make it rotate. See the video below to view the process and their results.
Rotationally symmetrical lego designs made physically and assessed digitally
This is the movie made from students' digital animations of their lego plates.
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