Building
upon knowledge and skills gained in preceding
grades,
by the end of Grade 2, students will:
Standard 4.3
(Patterns
and Algebra) All students will represent and
analyze
relationships among variable quantities and solve
problems involving patterns, functions, and
algebraic
concepts and processes.
Standard 4.3.K.A
Patterns
Standard 4.3.K.A.1
Recognize,
describe, extend, and create patterns.
· Using concrete materials (manipulatives),
pictures, rhythms, & whole numbers
· Descriptions using words and symbols (e.g.,
"add two" or "+ 2")
· Repeating patterns
· Whole number patterns that grow or shrink
as a result of repeatedly adding or subtracting
a fixed number (e.g., skip counting forward or backward)
Standard 4.3.K.B
Functions
and Relationships
Standard 4.3.K.B.1
Use
concrete and pictorial models of function machines
to explore the basic concept of a function.
Standard 4.3.K.C
Modeling
Standard 4.3.K.C.1
Recognize
and describe changes over time (e.g., temperature,
height).
Standard 4.3.K.C.2
Construct
and solve simple open sentences involving addition
or subtraction.
· Result unknown (e.g., 6 – 2 = __
or n = 3 + 5)
· Part unknown (e.g., 3 + __ = 8)
Standard 4.3.K.D
Procedures
Standard 4.3.K.D.1
Understand and apply (but don’t name) the
following properties of addition:
· Commutative (e.g., 5 + 3 = 3 + 5)
· Zero as the identity element (e.g., 7 +
0 = 7)
· Associative (e.g., 7 + 3 + 2 can be found
by first adding either 7 + 3 or 3 + 2)
