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- [ CMP - Stretching and Shrinking ]
Calculators are strongly recommended this week for scaling exercises.
[Information on Similarity, etc.]
1-3-2006 Math 2a
1. Scale Drawing of room
OBJECTIVE: •To use the definition of similarity to recognize when figures are similar •To determine the scale factor between similar figures to find the lengths of corresponding sides[1.1.4] •To find a missing measurement in a pair of similar figures[1.1.4] •To use the relationship between scale factor and area to find the area of a figure that is similar to a figure of a known area •To solve problems that involve scaling up and down[1.1.4][1.2.5][1.3.1][1.3.2][5.1.1] ACTIVITIES/ASSESSMENT: Students will begin to make a scale drawing from their sketch. The initial requirement will be that the longest wall must be 5-5/8" scale size on a piece of plain 8-1/2 x 11 paper. This is NOT a sketch. Students are to maintain a calculation log. NOTES: Collect papers at end of class. All drawings are to be by hand. HOMEWORK: Measure figure 1. [
1-4-2006 Math 2a
1. HOMEWORK: Measure figure 1.
2. Scale Drawing of room
OBJECTIVE: See 1-3 above. ACTIVITIES/ASSESSMENT: Students will practice measuring with a protractor on figure 1 (homework handout); They will continue with the scale drawing of their room into a final copy with full size dimensions added. Keep calculation pages. Collect work at end of the day. NOTES: HOMEWORK: Measure Figure 2 [
1-5-2006 Math 2a
1. HOMEWORK: Measure Figure 2
2. Scale Drawing of room - finish
OBJECTIVE: See 1-3 above. ACTIVITIES/ASSESSMENT: Finish the scale drawing of the room. Submit with measures.(finished or not) NOTES: [See Solar system HTML]
1-6-2006 Math 2a
1. Page 60 -61 Problem 5.1 all
OBJECTIVE: • To recognize similar figures in the real world • To find a missing measurement in a pair of similar figures • To apply what has been learned about similar figures to solve real-world problems • To collect data, analyze it, and draw reasoned conclusions from it[1.3.1 Understand the concept of similarity.][GS01 (Properties and Relationships) Demonstrate understanding of the concept of similarity and the characteristics of circles and rectangular prisms; use the characteristics of angles, polygons, circles, and rectangular prisms to draw, describe, and compare objects and figures (1.3.1, 1.3.2)] ACTIVITIES/ASSESSMENT: Page 60 -61 Problem 5.1 all NOTES: Deals with similar triangles. ((see pre page 60 TE)) HOMEWORK: Measure Figure 3
[Indirect Measures]
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