# Third Grade Module 4 Vocabulary

Terminology
New or Recently Introduced Terms
Area (the amount of two-dimensional space in a bounded region)

Area model (a model for multiplication that relates rectangular arrays to area)
Square unit (a unit of area—specifically square centimeters, inches, feet, and meters)

Tile (to cover a region without gaps or overlaps) 

Unit square (e.g., given a length unit, it is a 1 unit by 1 unit square)

Whole number (an integer, i.e., a number without fractions)