Protocols for Instructions SETUp January 11 2015 Day 1 S You should have the following items on your desk Lesson 202 Practice P 276 s 1014 Calculator Pencil amp Pen Tear out ID: 1044913
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1. Noise Level = 0, No talking.Protocols for Instructions: SET-UpJanuary 11, 2015 (Day #1)SYou should have the following items on your desk.Lesson 20-2 Practice, P. 276 #’s 10-14 Calculator Pencil & PenTear out Activity #21: Dilations pages 279–290 from your Springboard Book.Take the Challenge!Sit quietly and wait for teacher instructionsETake the Challenge!How do you describe the properties of dilations?TREADY TO LEARN TIME: 2:47 PMSit and organize materials.Enter the classroom quietly, voice level = 0. Get your Springboard Book from the shelf and take a sheet. Examine and follow directions:
2. Lesson 20-2 Practice: 1/11/2016Noise Level = 0, No talking.Answer: ∆LOG ~ ∆PIN and ∆ARM ~ ∆BET Answer: ft. Answer: Answer: The ratio of the perimeters equals the scale factor. For example, using the similar triangles in Item 11, the scale factor is 2.2, the perimeter of ∆ABC is 99 in., the perimeter of ∆RST is 45in., and the ratio of the perimeters is . Answer: Lucas is correct. Since the sum of the angle measures in a triangle is 180˚, the third angles in the triangles must have the same measure. Since all three pairs of corresponding angles are congruent, the triangles are similar.
3. Lesson 21–1: Stretching and Shrinking Geometric FiguresLearning Targets:Investigate the effects of dilations on two-dimensional figures.Explore the relationship of dilated figures on the coordinate plane.TEK(S):I know that ratios of corresponding sides of similar shapes are proportional. (8.3A) I know that dilations produce similar figures. (8.3A)I can identify the similarities and differences between a shape and its dilation on a coordinate plane. (8.3B)I know the properties of transformations. (8.10A)I can represent transformations algebraically for the coordinate plane. (8.10C) I can model the effect on linear and area measurements of dilated 2-D shapes. (8.10D)
4. Problem #’s 1–2, P. 279–280 How long do we have to complete the activity?8 minutesWhat do we do? Complete problem #’s 1 – 2 in your group.Noise Level = 2, Quiet Whisper.
5. Problem #’s 1–2, P. 279–280 How long do we have to complete the activity?8 minutesWhat do we do? Complete problem #’s 1 – 2 in your group.Noise Level = 2, Quiet Whisper.
6. Problem #’s 3, P. 281 How long do we have to complete the activity?3 minutesWhat do we do? Complete problem #3 in your group.Noise Level = 2, Quiet Whisper.
7. Exit ticket: 1/11/2016Noise Level = 0, No talking.3.5 2/54. 0.6 Directions: Determine whether the dilation from Figure A to Figure B is a reduction or an enlargement. Then, find the values of the variables.1. 2. Directions: Determine if the following scale factor would create an enlargement, reduction, or isometric figure.
8. Wrap-up: 1/11/2016W- Write homework assignment in planner Lesson 21–1: Stretching and Shrinking Geometric Figures (#4 & Try These A) due on Tuesday at the beginning of class.R- Return materials and organize suppliesA-Assess how well you worked in a group or individuallyDid I/we maintain operating standards?Did I/we work toward learning goals?Did I/we complete tasks?P- Praise one another for high quality work: 5 team points for a “P” performance overallNoise Level = 0
9. Noise Level = 0, No talking.Protocols for Instructions: SET-UpJanuary 12, 2015 (Day #2)SYou should have the following items on your desk.Lesson 21-1 #4 & Try These A P. 281-284Composition BookClean sheet of notebook paper Calculator Pencil & PenTear out Activity #21: Dilations pages 291–292 from your Springboard Book.Take the Challenge!Sit quietly and wait for teacher instructionsETake the Challenge!How do you describe the properties of dilations?TREADY TO LEARN TIME: 2:47 PMSit and organize materials.Enter the classroom quietly, voice level = 0. Get your Springboard Book from the shelf and take a sheet. Examine and follow directions:
10. Problem #4a & b, P. 281-282 How long do we have to complete the activity?3 minutesWhat do we do? Complete problem #3 in your group.Noise Level = 2, Quiet Whisper.
11. Problem #4c, d & e, P. 281-282 How long do we have to complete the activity?3 minutesWhat do we do? Complete problem #3 in your group.Noise Level = 2, Quiet Whisper.
12. Example a, P. 283Noise Level = 0, No Talking.
13. Example a, p. 238Noise Level = 0, No Talking.
14. Problem #Try these, P. 284 How long do we have to complete the activity?3 minutesWhat do we do? Complete problem #3 in your group.Noise Level = 2, Quiet Whisper.6/4 = x/56 • 5 = 4 • x30 = 4x7.5 = xNotes: To find the perimeter you add of all the side lengths.Ex: Perimeter of ∆AL’C’ P = 4 + 3 + 5 = 12
15. Check your understandingHow long do we have to complete the activity?8 minutesWhat do we do? Complete the Check Your understanding #’s 8 – 9 Independently.Noise Level = 0, No talking.Page 284 #’s 5–7
16. Check your understandingHow long do we have to complete the activity?10 minutesWhat do we do? Complete the Exploring Similar Figures WS #’s 1-6 (ALL) in your group.Page 284 #5–6 Answer: Since the perimeter is comparing the image to the pre-image, and the ratio is a value greater than 1, then the image has a greater perimeter than the pre-image.Answer: Corresponding sides must be proportional.
17. Check your understandingHow long do we have to complete the activity?10 minutesWhat do we do? Complete the Exploring Similar Figures WS #’s 1-6 (ALL) in your group.Page 284 #7 Answer: Bradley; only one element, either radius or diameter, defines the dimensions of a circle. Susan is incorrect because the length and width of a rectangle defines its dimensions.
18. Lesson 21-1 (quiz): 1/12/2016Noise Level = 0, No talking.How long do we have to complete the exam? 10 minutesWhat do I do? You will need to complete page 291, Dilations – Alice’s Adventure in Shrinking and Growing problems #’s 2-6 (ALL). Use a separate sheet of notebook paper to show your work. To receive full credit ALL mathematical process should be shown. What do I do when I finish the exam? Begin working you your homework; Lesson 21-1 Practice, P. 285 #’s 8-11TEK(S):I know that ratios of corresponding sides of similar shapes are proportional. (8.3A) I know that dilations produce similar figures. (8.3A)I can identify the similarities and differences between a shape and its dilation on a coordinate plane. (8.3B)I know the properties of transformations. (8.10A)I can represent transformations algebraically for the coordinate plane. (8.10C) I can model the effect on linear and area measurements of dilated 2-D shapes. (8.10D)
19. Wrap-up: 1/12/2016W- Write homework assignment in planner Lesson 21–1: Stretching and Shrinking Geometric Figures, P. 285 #’s 8-11, due on Wednesday at the beginning of class.R- Return materials and organize suppliesA-Assess how well you worked in a group or individuallyDid I/we maintain operating standards?Did I/we work toward learning goals?Did I/we complete tasks?P- Praise one another for high quality work: 5 team points for a “P” performance overallNoise Level = 0
20. Lesson 21-1 Practice, P. 285 #’s 8 – 11
21. Lesson 21-1 Practice: (Answer key)