Students expand their understanding of geometric measurement and spatial structuring to include volume as an attribute of three‐dimensional space. In this unit, students develop this understanding using concrete models to discover strategies for finding volume, and then later in Unit 9 students generalize this understanding in real‐world problems and apply strategies and formulas. The connection to multiplication and addition provides an opportunity for students to start the year off by applying the multiplication and addition strategies they learned in previous grades in a new, interesting context.
Unitataglance
Key concept: Volume is an attribute of solid figures, and is a measure of space inside the solid figure. 
Key concept: A cube with the side length of 1 unit, called a “unit cube,” is said to have “one cubic unit” of volume, and can be used to measure volume. 
Key concept: A solid figure which can be packed without gaps or overlaps using n unit cubes is said to have a volume of n cubic units. 


Suggested pacing 
Days 13 
Days 45 
Days 611 
Suggested class plan 



Additional unit information
Prior Knowledge Needed:
 Understand linear measurement and how to measure and estimate lengths with standard units (Grade 2, Unit 2; 2.MD.A.1, 2.MD.A.2)
 Understand that area is the space inside of a 2D figure; (Grade 3, Unit 2; 3.MD.C.5a)
 Understand that a square with a side length of 1 unit is said to have one square unit of area and is used to measure area; (Grade 3, Unit 2; 3.MD.C.5a)
 Use multiplication and division to solve measurement problems, including solving problems and using estimation with liquid volume (Grade 3, Unit 14; 3.OA.A.3, 3.MD.A.2)
Units on the Horizon:
 Solving problems involving volume (Grade 5, Unit 9)
 Problemsolving with volume and surface area (Grade 6, Unit 11)
 3D figures (Grade 7, Unit 12)
Lessons, practice, & assessment