Grade 2 - Shape and Space
Standard 2.SS.1 - Compare the height of different objects determining which is taller or shorter.
Included Skills: Measurement, Comparison
Demonstrate understanding of non-standard units for linear measurement by: • describing the choice and appropriate use of non-standard units • estimating • measuring • comparing and analyzing measurements. • Defend the choice of a non-standard unit for measuring a length in a situation relevant to one's self, family, or community. • Estimate a personally relevant length, including the distance around a space, using one's own choice of standard unit. • Compare estimates of the same length made by different units and provide reasons for different values being stated for the measurements. • Critique the statement "It is possible to get an exact length measurement". • Devise and apply strategies for determining estimates for linear and non-linear lengths using non-standard units. • Explain why overlapping or leaving gaps does not result in accurate measurements. • Explain why the same non-standard unit should be used to determine length measurements that are to be compared. • Compare and order sets of related objects, possibly including people, according to a length measurement.