# Grade 1 » Measurement & Data

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#### Measure lengths indirectly and by iterating length units.

CCSS.Math.Content.1.MD.A.1

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

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

CCSS.Math.Content.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.

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*.#### Tell and write time.

CCSS.Math.Content.1.MD.B.3

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

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

#### Represent and interpret data.

CCSS.Math.Content.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.

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.