TEKS Student Expectation:
The student is expected to convert measures within the same measurement system (customary
and metric) based on relationships between units (6.8D)
Materials
Vocabulary
Warm-up
Per pair
Per student
From Zero to One
Convert
1-foot ruler
TAKS mathematics
Ratio
Yard stick
charts
4
1
Relationship
,
, 0.21, 0, 1
Worksheet
6
5
Activity: Today we will use ratio patterns to solve measurement problems involving length.
1. The teacher says:
Remember that a ratio is the comparison of two quantities. We can use word ratios to help
us place the quantities of a ratio in the correct position.
Locate on your TAKS mathematics chart the number of feet in a yard.
yards
If we want to write the ratio of yards to feet, what would the word ratio be? (
)
feet
1
What is the ratio of yards to feet? (1:3, 1 to 3 or
because each yard is made up of 3 feet)
3
Fill in the remainder of table 1 on your worksheet. You can use the ruler, yard stick, paper
and pencil, mental math or calculator.
2. Compare answers on table 1and discuss strategies for filling in the table.
3. The teacher says:
1
3
2
5
Using the values in table 1, create a proportion. (
etc.)
3
9
6
15
4. The teacher says:
feet
What is the word ratio for feet to inches? (
)
inches
What is the ratio of feet to inches? (1 to 12) Inches to feet? (12 to 1)
yards
What is the word ratio for yards to inches? (
)
inches
What is the ratio of yards to inches? (1 to 36) Inches to yards? (36 to 1)
Fill in the remainder of table 2 on your worksheet. You can use the ruler, yard stick, paper
and pencil, mental math or calculator.
Measurement
2006-2007
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