Lesson 6

How Long Does It Take

Est. Class Sessions: 2

Daily Practice and Problems

Teacher Notes
X

Students will need links, a 12-inch ruler, and pennies to measure the long edge of a sheet of paper.

  1. About 8 links
  2. 11 inches
  3. About 14 pennies
  4. The measurements are not the same because the units are not the same. There are fewer links because a link is a larger unit than an inch or a penny.

Ongoing Assessment

Use DPP item Y to assess students' abilities to recognize that the measure of a length is dependent on the size of the unit of measure [E7].

Y. Measure with Two Units

  1. Measure the length of a piece of paper with links.
  2. Measure the length of a piece of paper with inches.
  3. Measure the length of a piece of paper with pennies.
  4. Are all the measurements the same? Why or why not?