ruler, pattern blocks,
small paper clip, paper
Skills: Metric units of measurement,
1. Ask students to identify measurements in the metric
system that measure length. Have students explain
why we need different-sized units. Introduce the
concept of millimeters, if necessary.
2. Place a ruler
Twist so the
Take a snapshot of
the five centimeters.
Then lower Twist
and focus in on one
centimeter. Take a
snapshot of the
3. Open both snapshots and place the images side by
side. Ask the students to determine the number of millimeters
there are in a centimeter.
Compare the two snapshots to help with the concept.
4. Place the paper clip under the Twist and ask the
students to estimate the length. Have students predict
if the paper clip will measure a full centimeter or part
of a centimeter. Place the ruler beside the paper clip
and focus the Twist so the students can read the
measurement. Help students determine the length
5. Provide the
Blocks and a ruler.
Have them measure
the blocks in
the attached sheet.
the class and
the measurement by using Twist to show the process.
Repeat several times.
6. Use snapshots from students' measurements with Twist
to document their estimation and measurement skills.
7. If students are ready, introduce the concepts related
to writing measurements to the nearest tenth of a
millimeter and have students practice with the aid