# First Grade Measurement and Data Standards

First Grade Math: Measurement and Data  Standards

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.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.

Tell and write time.

• 1.MD.3. Tell and write time in hours and half-hours using analog and digital clocks.

Represent and interpret data.

• 1.MD.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.