Choice, Inc.
|
Understands that a similarity ratio
exists between the corresponding sides
of similar objects.
Knows the criteria for similarity
in polygons
Understands the mathematical concept
of similarity
Applies a scale factor to enlarge or
reduce an object
Recognizes and uses different
representations of the same ratio
Compares part to part or part to whole
to find a ratio
Understands the difference between
comparison using subtraction and
comparison using division
Uses division to compare quantities
Uses subtraction to compare quantities
page 1 of 2
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Ratio and Proportionality
1.
Stu
© America’s
Name
dent Class Profile—Unit 5
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
OBSERVATIONAL ASSESSMENT
237
238 |
© America’s
Understands that a similarity ratio
exists between the corresponding sides
of similar objects.
Knows the criteria for similarity
in polygons
Understands the mathematical concept
of similarity
Applies a scale factor to enlarge or
reduce an object
Recognizes and uses different
representations of the same ratio
Compares part to part or part to whole
to find a ratio
Understands the difference between
comparison using subtraction and
comparison using division
Uses division to compare quantities
Uses subtraction to compare quantities
page 1 of 2
–
+
–
+
–
+
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+
–
+
–
+
–
+
–
+
–
+
Ratio and Proportionality
Name
18.
Stu
dent Class Profile—Unit 5
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
OBSERVATIONAL ASSESSMENT
Choice, Inc.
Choice, Inc.
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+
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+
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+
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Translates equalities using
conversion factors
Uses ratios to derive conversion factors
Knows what a function is
–
+
–
+
–
+
Represents the relationship between cost +
and quantity using a graph
–
Uses dimensional analysis to
solve problems
Uses ratios to determine the unit price
of a commodity
Applies knowledge of similarity to solve +
“real world” problems
–
Uses ratios between and within
triangles to determine the lengths
of unknown sides
Knows the criteria for similarity
in triangles
page 2 of 2
Ratio and Proportionality
1.
Stu
© America’s
Name
dent Class Profile—Unit 5
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
OBSERVATIONAL ASSESSMENT
239
240 |
–
+
–
+
–
+
–
+
© America’s
Translates equalities using
conversion factors
Uses ratios to derive conversion factors
Knows what a function is
–
+
–
+
–
+
Represents the relationship between cost +
and quantity using a graph
–
Uses dimensional analysis to
solve problems
Uses ratios to determine the unit price
of a commodity
Applies knowledge of similarity to solve +
“real world” problems
–
Uses ratios between and within
triangles to determine the lengths
of unknown sides
Knows the criteria for similarity
in triangles
page 2 of 2
Ratio and Proportionality
Name
18.
Stu
dent Class Profile—Unit 5
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
OBSERVATIONAL ASSESSMENT
Choice, Inc.