Chapter 4 Scale Factors and Similarity


Test B


Note Key



4.1 Enlargements and Reductions
Look At These Web Sites
http://www.bbc.co.uk/bitesize/ks3/maths/shape_space/transformations2/revision/2/

Watch These Videos
http://www.youtube.com/watch?v=XEcsplDEtmc
http://www.youtube.com/watch?v=sQEkaWLSdgM
http://www.youtube.com/watch?v=Cag7m-Y-4vw

Text Information Page 130
Assignment
Text Page 136 - 137 # 4-13
Workbook Page 44 - 45 all

Minecraft Lesson
https://docs.google.com/document/d/1YhwPz-jkrHh1dUJWMDZuWZmFnZwSL2LHO7OXXR1ijy8/edit?usp=sharing

4.2 Scale Diagrams
Watch These Video
http://www.youtube.com/watch?v=bXTuP2eCsf4
http://www.youtube.com/watch?v=bG82Nrhnx_Y

Text Information 139 (focus on key ideas on page 142)
Assignment
Text p 143 # 4 to 19
workbook page 46-47

4.3 Similiar Triangles
Watch This Video
http://www.youtube.com/watch?v=BI-rtfZVXy0

Assignment
Text p 150 4- 13
workbook page 48-49

4.4 Similiar Polygons
View this website
http://www.mathopenref.com/similarpolygons.html
Watch this video
http://www.youtube.com/watch?v=-EEx_8aVw9A
Text Reference
p154-156 (check key ideas on 156)
Assignment
Worksheet on Similiar Triangle
Text p 157 #3-#12

Scale Project



Math Lab #1 - Similiar Triangles

Math Lab #2- Similiar Polygons

Review Questions

Study Focus

The following sections can be used to study.
  • Section 4.1 (pp. 136-138)
  • Section 4.2 (pp. 142-145)
  • Section 4.3 (pp. 150-153)
  • Section 4.4 (pp. 157-159)
  • Chapter Review/Practice Test (pp. 160-163)
To study most effectively, identify your strengths and weaknesses. To identify strengths, choose a focus from the chart below and ensure you can do the related problems. For weaknesses, choose the focus below and work on the related problems in order to improve.
Focus
Within the Chapter
Chapter Review
(pp. 160, 161)
Practice Test
(pp. 162, 163)
What are similar shapes?
  • Section 4.1: 11
  • Section 4.2: 3, 20ab
  • Section 4.3: 1, 2, 3, 4, 5, 6,7,8, 17, 19
  • Section 4.4: 2, 3, 4, 7, 8, 11, 14a, 18
1, 2, 3, 4, 13, 16
1, 3, 4, 6, 11, 13, 14
Can you find the scale factor?
  • Section 4.1: 7,9,10
  • Section 4.2: 2, 8, 9, 10, 11, 12, 14a, 15, 18, 19a, 20 abcd, 22
  • Section 4.3: 11
  • Section 4.4:
9, 12
8, 9,
Can you use scale factor for drawing?
  • Section 4.1: 2, 4, 5, 6, 8, 13, 14, 15, 16, 17
  • Section 4.2:
  • Section 4.3: 20
  • Section 4.4: 9, 11
5, 6, 7, 8
7
Can you use scale factor for finding a length?
  • Section 4.1: 12
  • Section 4.2: 1, 4, 5, 6, 7, 13, 14, 16, 17, 19, 21
  • Section 4.3: 9, 10, 11, 12, 13, 14, 15, 16, 18, 21, 22, 23
  • Section 4.4: 1, 5, 6, 9, 10, 12, 13, 14, 15, 16, 17
10, 11, 14, 15, 17, 18
2, 5, 10,