# Domain 1.MD, Measurement and Data

## Cluster 1.MD.A, Measure lengths indirectly and by iterating length units.

### Standard 1.MD.A.1

Order three objects by length; compare the lengths of two objects indirectly by using a third object.

### Standard 1.MD.A.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 length 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.

## Cluster 1.MD.B, Tell and write time.

### Standard 1.MD.B.3

Tell and write time in hours and half-hours using analog and digital clocks.

## Cluster 1.MD.C, Represent and interpret data.

### Standard 1.MD.C.4

Organize, represent, and interpret data with up to three categories; ask and answer questions about the total number of data points, how many in each category, and how many more or less are in one category than in another.