# Center

Estimate and Measure (1–4)

## Stage 1: Choose Your Unit

### Narrative

Students choose an object and a familiar unit to measure it with. They estimate the length of the object and then measure to see the actual length to the nearest whole unit.

Variation:

Students may use base-ten cubes and add the length of two objects to practice adding within 100.

Gather or identify objects of various lengths that are less than 20 units (pencils, markers, books, glue, scissors, shoe, tape dispenser, side of desk).

## Stage 2: Centimeters and Inches

### Narrative

Students choose an object and a unit (inches, feet, centimeters) to measure it with. They estimate the length of the object and then measure to see the actual length to the nearest whole unit.

Gather or identify objects of various lengths (pencils, markers, books, glue, scissors, shoes, tape dispensers, sides of desk, length of bulletin board).

## Stage 3: Quarter Inches

### Narrative

Students choose and estimate the length of the object and then measure to see the actual length to the nearest $$\frac{1}{4}$$ inch.

Students choose and estimate the length of the object and then measure to see the actual length to the nearest $$\frac{1}{8}$$ Inch.