1.  Measurement Review Math Alliance October 5, 2010 Kevin McLeod Chris Guthrie

2. Session Goals  Review ideas of measurement  Discuss homework

3. Measurement Review  Maria says her crayon is 5 inches long, to the nearest inch. What can you say about the true length of Maria’s crayon?  Maria measures her crayon again. Now she says it is 5 inches long, to the nearest ½ inch. What can you say about the true length?

4. Measurement Review (Contd.)  Now Maria says her crayon is 5 ½ inches long, to the nearest quarter inch. Should you believe her?

5. Process of Measurement  Decide on the attribute to be measured  Select a unit that has that attribute  Fill, cover or match the unit to the attribute of the object

6. How Long Is This Crayon?

7. Measuring Angles  What is an angle?  What units do we use when we measure angles?