Measurement and Data

Measure lengths indirectly and by iterating length units.
1.MD.1 Order three objects by length; compare the lengths of two objects indirectly by using a third object.
1.MD Task 1a
1.MD Task 1b; 1.MD 1b BLM
1.MD Task 1c

1.MD.2 Express the length of an object as a whole number of length units, by laying multiple copies of a shorter object (the length unit) end to end; understand that the length measurement of an object is the number of same-size units that span it with no gaps or overlaps. Limit to contexts where the object being measured is spanned by a whole number of length units with no gaps or overlaps.
1.MD Task 2a; 1.MD 2a Student Form
1.MD Task 2b; 1.MD 2b Student Form