2. •Units of measurement were among the earliest
tools invented by humans. Primitive societies
needed rudimentary measures for numerous tasks
such as: constructing dwellings of an appropriate
size and shape, fashioning clothing, or raw
materials.
•Length is a measurement of distance or
dimension. The two main systems to measure
length are the metric and the English system.
•We need frequent and repeated opportunities to
practice and apply measurement.

4. 10 millimeters (mm) = 1 centimeter (cm)
10 centimeters(cm) = 1 decimeter (dm) = 100 millimeters (mm)
10 decimeters (dm)= 1 meter (m)= 1000 millimeters (mm)
10 meters (m) = decameter (dam)
10 decameters( dam)=1 hectometer (hm) =100 meters (m)
10 hectometers=1 kilometer(km) = 1000 meters (m)

5. Task 1. Find the MIO system total layout in km,
hm, dam and m. Justify your answers.

6. Task 2. Help a friend from Bogota to learn about the
MIO . Make chart to explain the measurement of the
pre-trunk in m, dam, hm. Make a chart to explain your
answers.
Remember the pre-trunk has 78 km.

7. Task 3. Your new friend is at school with you,
and he needs to go to Cosmocentro. Help
him find two different options (MIO routes)
to get there. Remember to explain him the
number of the different routes he can take in
each case. Which is the best route and why?
Explain your answer (2 routes) in a complete
and complex way.

8. Task 4. Your new friend from Bogota made
many trips around the main trunk. He needs
to complete the following chart to find out
the distance he traveled:
TRIPS DISTANCES (IN km)
2
4
5
8 392
13

9. Remember to use charts, summary tables, or
other organizing structures to justify your
answers. You can visit the following web sites
to complete your work:
• www.mio.com.co
• http://www.metrocali.gov.co/
• http://www.studyzone.org/testprep/math4/d/metricl.cfm

10. There are four primary units used for length or
distance: kilometers (km), meters (m),
centimeters (cm), and millimeters (mm).
1000 meters = 1 kilometer
100 centimeters = 1 meter
10 millimeters = 1 centimeter

11. Task 5. Think and answer the following questions:
When are km, m, cm, dam used? Example.
_________________ are used for very long distances.
Choose the appropriate units to measure:
a) the length of objects such as eraser, pencil or book,
b) the length and height of your teacher’s table,
c) the length and width of your classroom,
d) the heights of your friends,

12. Remember…..
Your work must be very neat, complete,
attractive, good written introduction.
Imagination and creativity must evident.
You must print your project and hand it in
on time.