2nd Grade	3rd Grade		4th Grade		5th Grade
cardinal number	addend		acute		diameter
chance	area		associative property		distributive property
decreasing pattern	array		attributions		(numeric)
difference	commutative property		capacity		edges
distance	data		computation		equation (modeling)
foot (measurement)	decimal		congruent		expanded form
fraction	denominator		dividend		faces
geometric shapes/figures	elapsed time		divisor		improper fraction
height	estimation		equivalent		intersecting (lines)
increasing pattern	factor		grid		inverse operation
length	graph		hundredths		mean
model	horizontal		identity property		metric units (meter, liter,
numeric pattern	measurement		mass		gram)
ordinal number	metric system		median		millions
outcome	multiple		mode		mixed numbers
pattern extension	letter/number coordinates		obtuse		parallel (lines)
quarter-hour	number sentence		quotient		perpendicular (lines)
regroup	numerator		reasonable		plane
second (time)	perimeter		similar (comparing figures)		polygon (regular/irregular)
set	place value		tenths		proper fraction
standard measurement	probability (conceptual)		transformations (flips, slides,		quadrilateral
symmetry	product		turns)		radius
table	scale		volume (conceptual)		ray
time interval	three-dimensional		zero property		standard form
whole number	two-dimensional				thousandths
width	vertical				types of triangles (isosceles,
					equilateral, scalene, right,
					acute, obtuse)
					variable
					x, y axis