Investigations 3 in Number, Data, and Space, Student Activity Book [Grade 1]

Unit 4 Fish Lengths and Fraction Rugs > Investigation 1 > About the Mathematics in This Unit

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About the Mathematics in This Unit

Benchmarks/Goals	Examples
Solve comparison story problems about how many more or fewer.	Sam's fish is 6 inches long. Kim's fish is 8 inches long. How much longer is Kim's fish? (or How much shorter is Sam's fish?)
Tell time to the hour.
Identify and divide shapes into halves and fourths.	These show halves. d This shows fourths.

Benchmarks/Goals

Examples

Solve comparison story problems about how many more or fewer.

Sam's fish is 6 inches long. Kim's fish is 8 inches long. How much longer is Kim's fish? (or How much shorter is Sam's fish?)

Tell time to the hour.

Two clocks show different times. The first clock shows the hour hand pointing to the “1” and the minute hand pointing to the “12.” The second clock shows the hour hand pointing to the “5” and the minute hand pointing to the “12.”

Identify and divide shapes into halves and fourths.

These show halves.

This shows fourths.

A circle is divided into fourths vertically and horizontally.

Throughout this unit, students are learning to use consistent units to measure accurately and to understand the underlying mathematics of measuring. This kind of experience will improve their sense of what measuring is all about. Their work with fractions begins to lay the foundation for work in later grades. In the coming weeks, you will receive more information about the mathematics in this unit as well as suggested activities to do at home.

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