Measure lengths indirectly and by iterating length units
1.MD.A.1 Order three objects by length; compare the lengths of two objects indirectly by using a third object.
Possible Activities:
Which is Longest?
Scoop and Order

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 is being measured is spanned by a whole number of length units with no gaps or overlaps.
Possible Activities:
Measuring with Sticks
Measuring with Snap Cubes
Also included in 1st Grade Math Centers:
Measuring Shoes
Measuring with Dominoes
Ordering Cuisenaire Rods
Which is Longer?

Tell and write time
1.MD.B.3 Tell and write time in hours and half-hours using analog and digital clocks
Possible Activities:
Time Barrier Game (v.1)
My Favorite Time of Day
Also included in 1st Grade Math Centers:
Time Match (v. 1)
Time Match (v. 2)

Represent and interpret data
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 another.
Which Has Fewer? (v. 1)
Draw a Graph (v. 1-3)
Also included in 1st Grade Math Centers:
Which Has Fewer (v. 2)

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