Unit 3

Measurement and Data


Grade 1




Description:  Students focus on measuring and comparing lengths indirectly and by iterating length units, gives students a few weeks to practice and internalize “making a 10” during daily fluency activities.


Louisiana Student Standards for Mathematics (LSSM)

Instructional Outcomes


Measurement and Data



Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.




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




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-sized 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.



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.




Enduring Understandings:


·         Students understand the concept of length.

·         Students compare and order objects by lengths.

·         Students measure the length of objects using non-standard units.  Students will tell and write time in hours and half-hours.

·         Students organize, represent, and interpret data with up to three categories.


Essential Questions:


·         How can I make a good decision?

·         Why is it important to show my thinking in different ways?

·         How is it helpful for everyone to understand the same ideas?

·         How can I decide which tools to use?

·         Why do I need to measure things?