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Happy Wednesday!  2.27.19

Join us for a fun and interactive session on dilations, translations, rotations, and reflections in two-dimensional figures. Learn how to graph dilations accurately using scale factors and discover where these transformations are used in real life. Don't forget to bring your calculator!

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Happy Wednesday!  2.27.19

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  1. Happy Wednesday!  2.27.19 Grab a sheet & head to Go Formative While you wait for your computer, graph this:          #3.)     4y=8x+12

  2. Agenda • Pixar TED Talk • Dilations Foldable • Dilations Practice on GOFO • Padlet • Transtar Game • Describe the effect of dilations, translations, rotations, and reflections on two-dimensional figures using coordinates • Use scale factors to graph dilations with 80% accuracy.

  3. Where are transformations used? https://www.youtube.com/watch?v=_IZMVMf4NQ0

  4. TED Talk Questions • What type of math do we use for dilations? • What would the mathematics of reflections be? • Distance from A to B. Do we know a formula to find that?

  5. Dilation An enlargement or reduction The object has same shape, different size All angles congruent All sides proportional Figures are SIMILAR, NOT CONGRUENT

  6. Where have we seen dilation before?

  7. How do you dilate a figure? http://www.mathwarehouse.com/transformations/dilations/dilations-in-math.php

  8. An enlargement, or an image larger then the original, if k>1

  9. Multiply coordinates by scale factor. Usually, the letter k represents the scale factor.

  10. Multiply coordinates by scale factor. All x AND y coordinates multiplied by 3 Sides proportional

  11. What do you need to do to the x- and y- coordinates of each vertex to find the coordinates of the dilated figure?

  12. What is the scale factor of the dilation?

  13. A reduction, or an image smaller than the original, if 0<k<1.

  14. Partner Practice on Go Formative #1-2 Write the prime vertices for the dilated figure.

  15. Partner Practice on Go Formative #1

  16. Partner Practice on Go Formative #2

  17. #3-6 Write the new vertices. Graph the dilation.

  18. Solutions to #3-6

  19. Partner Practice on Go Formative #7-8 Write the prime vertices for the dilated figure.

  20. #9-12 Write the new vertices. Graph the dilation.

  21. Solutions to #9-12

  22. Categorize! Enlargement or Reduction?

  23. REFLECTION, Answer in Go Formative

  24. Padlet Reflection Finish this sentence. Dilations are like ______ because ________.

  25. Padlet Reflectionpassword Pixar http://bit.ly/pooledilations • Include: • Name • Sentence • Picture of example

  26. Transtar Game • https://www.mangahigh.com/en-us/games/transtar

  27. TGIF!! 2.17.17 Head to GOFORMATIVE Graph the following on the GRAPHING STORIES SIDE IGNORE the numbers-not 15 seconds, just sketch the shape of the graph: A plane takes off and climbs steadily for a while, then it continues at the same altitude.

  28. Agenda • Dilations Practice • Complete Transformation Logo Project • Describe the effect of dilations, translations, rotations, and reflections on two-dimensional figures using coordinates • Use scale factors to graph dilations with 80% accuracy.

  29. Dilation Day 2 Practice – Go Formative No calculator! Silent Struggle Time. I need to know what your brain knows! Link to game at bottom if you finish.

  30. Do you know where your calculator is? Bring it Monday!

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