Lesson 4 Measure and Estimate in Centimeters
Let’s estimate and measure in centimeters.
Warm-up Which One Doesn’t Belong: Length
Which one doesn’t belong?
Activity 1 Estimate Length in Centimeters
Record an estimate that is:
too low
about right
too high
Record an estimate that is:
too low
about right
too high
Record an estimate for each object on the recording sheet.
Recording Sheet
object
estimate
measurement
Choose an object:
Tell your partner why you think your estimates are “about right.”
Activity 2 Measure and Compare
Measure each object on your recording sheet. Record each length in centimeters.
Compare your measurements to your estimates.
Practice Problem
Problem 1
Here is a rectangle.
Estimate how many centimeters long the rectangle is.
cm
Measure the rectangle and record the measurement.
cm
How does your estimate compare to the actual length?