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- [ CMP - Stretching and Shrinking? ]
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[Test Item Specifications for this book....]
compare corresponds, corresponding image ratio scale, scale factor similar angle angle measure area congruent coordinate graphing coordinates diameter dimensions line plot line segment parallel perimeter perpendicular vertex midpoint transform, transforming (slide, flip, turn = translate, reflect, rotate)
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1-18-2005
-Homework: Page 23 #7, Page 24 #9
-SpaceBunny
OBJECTIVE: To review locating points in a coordinate system To graph figures using algebraic rules To predict how figures on a coordinate system are affected by a given rule To learn that corresponding angles of similar figures are equal and that corresponding sides grow by the same factor[1.3.1]To compare lengths and angles in similar and nonsimilar figures informally To experiment with examples and counterexamples of similar shapes [1.3.4] Understand and apply combinations of translations (slides) and reflections (flips) to two-dimensional figures. ACTIVITIES/ASSESSMENT: Working with space bunny ( (2,1), (5,3), (2,4), (3,3), (1,3)) make tables and implement the following rules 1)2x,2y 2)x+8,y 3)x+3 y+7 4)0.5x,0.5y Reflect original figure across the x axis. NOTES: 1st and 4th quadrant only. Present questions on scale factor. HOMEWORK: P26 #14; P27 1&2
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1-19-2005
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-Homework: Pp26-27 14,1,2
OBJECTIVE: See 1-18 above. ACTIVITIES/ASSESSMENT: Present, model and discuss the 'variable tension proportioner' (rubber band), the pantograph, and the projection method for making enlargements/reductions. Students may practice these activities. Introduce the notions of scale and scale factor. Distribute vocabulary. NOTES: compare corresponds, corresponding image ratio scale, scale factor, similar angle* angle measure* area* congruent* coordinate graphing* coordinates* diameter* dimensions* line plot* line segment* parallel* perimeter* perpendicular* vertex* midpoint* transform, transforming (slide, flip, turn = translate, reflect, rotate) HOMEWORK: draw a triangle; use projection to enlarge and reduce. Measre the sides of the original and the two similar figures.
1-20-2005
-Similar set
=Page 28 Problem 3.1+
OBJECTIVE: To recognize similar figures and to be able to tell why they are similar [1.3.3][1.3.1] To understand that any two similar figures are related by a scale factor, which is the ratio of their corresponding sizes To build a larger, similar shape from copies of a basic shape (a rep-tile) To find rep-tiles by dividing a large shape into smaller, similar shapes To understand that the sides and perimeters of similar figures grow by a scale factor and that the areas grow by the square of the scale factor[1.2.1][1.2.3] To find a missing measurement in a pair of similar figures To recognize that triangles with equal corresponding angles are similar above. ACTIVITIES/ASSESSMENT: Page 28, Problem 3.1 NOTES: LABSHEET 3.1 Measure sides and angles, establish ratios if appropriate. Do follow-Up HOMEWORK: Pp33-35 1-7
1-21-2005
-Homework: Page 33-35 1-7
OBJECTIVE: See 1-20 above. ACTIVITIES/ASSESSMENT: See supplemental program/handout from teacher generated exercise. NOTES: HOMEWORK: Demonstrate translation and reflection. Make a guess as to what rotation (turn) would be. Use a five point figure (like space bunny)
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