Standards Database Logo
Home | Browse | Search | Purpose | History | Process | Acknowledgment| Reference

 


 


Topic: Measurement and Data 

Common Core Mathematics K-2

 Cluster  Describe and compare measurable attributes.
  Kindergarten
   K.MD.1.Describe measurable attributes of objects, such as length or weight. Describe several measurable attributes of a single object.
   K.MD.2.Directly compare two objects with a measurable attribute in common, to see which object has "more of"/"less of" the attribute, and describe the difference. For example, directly compare the heights of two children and describe one child as taller/shorter.
 Cluster  Classify objects and count the number of objects in each category.
  Kindergarten
   K.MD.3.Classify objects into given categories; count the numbers of objects in each category and sort the categories by count.[Limit category counts to be less than or equal to 10.]
 Cluster  Measure lengths indirectly and by iterating length units.
  Grade 1
   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.
 Cluster  Tell and write time.
  Grade 1
   1.MD.3.Tell and write time in hours and half-hours using analog and digital clocks.
 Cluster  Represent and interpret data.
  Grade 1
   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.
 Cluster  Measure and estimate lengths in standard units.
  Grade 2
   2.MD.1.Measure the length of an object by selecting and using appropriate tools such as rulers, yardsticks, meter sticks, and measuring tapes.
   2.MD.2.Measure the length of an object twice, using length units of different lengths for the two measurements; describe how the two measurements relate to the size of the unit chosen.
   2.MD.3.Estimate lengths using units of inches, feet, centimeters, and meters.
   2.MD.4.Measure to determine how much longer one object is than another, expressing the length difference in terms of a standard length unit.
 Cluster  Relate addition and subtraction to length.
  Grade 2
   2.MD.5.Use addition and subtraction within 100 to solve word problems involving lengths that are given in the same units, e.g., by using drawings (such as drawings of rulers) and equations with a symbol for the unknown number to represent the problem.
   2.MD.6.Represent whole numbers as lengths from 0 on a number line diagram with equally spaced points corresponding to the numbers 0, 1, 2, ..., and represent whole-number sums and differences within 100 on a number line diagram.
 Cluster  Work with time and money.
  Grade 2
   2.MD.7.Tell and write time from analog and digital clocks to the nearest five minutes, using a.m. and p.m.
   2.MD.8.Solve word problems involving dollar bills, quarters, dimes, nickels, and pennies, using $ and ยข symbols appropriately. Example: If you have 2 dimes and 3 pennies, how many cents do you have?
 Cluster  Represent and interpret data.
  Grade 2
   2.MD.9.Generate measurement data by measuring lengths of several objects to the nearest whole unit, or by making repeated measurements of the same object. Show the measurements by making a line plot, where the horizontal scale is marked off in whole-number units.
   2.MD.10.Draw a picture graph and a bar graph (with single-unit scale) to represent a data set with up to four categories. Solve simple put-together, take-apart, and compare problems using information presented in a bar graph.