![]() Challenge: Have students figure out how to create 45° rotational symmetry by combining drawings with 90° rotational symmetries.Discuss this using polar coordinates as well. Students can discover the appropriate slope for the line of symmetry and then discuss why it works. Use the Desmos Graphing Calculator to overlay a coordinate plane on top of your drawing and then show how the relationships between symmetry and slope.Create drawings to put on a quiz using Google Forms or some other online quiz application such as Socrative, Formative, or Kahoot!.Students can submit their Google Slides presentation via Google Classroom. ![]() For example, students can use 2-fold rotational symmetry (as Silk calls it) to demonstrate 90° rotational symmetry. The students can add drawings that fit the title of each slide. Share this Google Slides presentation using Google Classroom so that each student gets a copy.Ask students to identify the symmetry for each color. Create symmetrical drawings as displayed above with multiple colors representing various types of symmetry.Demonstrate line and rotational symmetry by drawing each type and discussing the properties of each type.Here are some ideas of how TEACHERS can use Silk. These questions can be asked via a Google Forms quiz which they can link to on Google Classroom, Padlet, TodaysMeet, or other sharing applications for their peers to answer. Students can download their drawings of symmetry to create questions. ![]() Then, students can give feedback (critique or even correct) their classmates’ work. If the teacher shares a Google Slides presentation with the whole class, students can add their images and explanations to it so that they could learn about symmetry from their peers. They can share their drawings with the teacher and/or fellow students directly via Google Classroom, insert it into a Google Slides presentation or download it as an image file and share it via Padlet, Pinterest, or other sharing applications.
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