Stretching+and+Shrinking+0910

__ Stretching and Shrinking __

Big Idea Many things in our world are mathematically similar and we can use this to understand and describe the world around us.

Essential Question # 1 - How can I make a drawn figure larger? 1.1 Stretching a Figure Mathematical Reflections p.13

Essential Question # 2 - What is the same and what is different about “similar” figures? 2.1 Drawing Wumps 2.2 Nosing Around 2.3 Making Wump Hats Mathematical Reflections p. 27

Essential Question # 3 - How can I use math to check if two figures are similar? 3.1 Identifying Similar Figures 3.2 Building with Rep-tiles 3.3 Subdividing to find Rep-tiles Mathematical Reflections p.40

Essential Question # 4/5 - What types situations can I use my similarity ideas to solve? 4.1 Using Similarity to Solve a Mystery 4.2 Scaling Up 4.3 Making Copies 4.4 Using Map Scales Mathematical Reflections p.58

Essential Question # 4/5 - What types situations can I use my similarity ideas to solve? 5.1 Using Shadows to Find Heights 5.2 Using Mirrors to Find Heights 5.3 Using Similar Triangles to find Distances Mathematical Reflections p. 74

__ Stretching and Shrinking Vocabulary __
 * 1) angle measure
 * 2) compare
 * 3) congruent
 * 4) corresponds/corresponding
 * 5) diameter
 * 6) image
 * 7) parallel
 * 8) perpendicular
 * 9) ratio
 * 10) scale
 * 11) scale factor
 * 12) similar
 * 13) vertex