Developing Algebraic Thinking Crossword

a theory and practice of arithmetic operations that uses symbols, especially letters, to represent unknown variable in equations
opposite of counting numbers
can help children visualize integers
patterns that grow or change
boy-girl-boy-girl arrangement
letters that represent quantities that may or may not vary, or change
quantities that do not vary
7x, 3xy, y, and 8
7x and 2x
a symbolic statement and can be either an arithmetic expression or an algebraic expression
an expression that looks like 2+3
an expression that looks like 2x+3
a+b = b+a, ab = ba
(a+b) + c = a+ (b+c), (ab)c = a(bc)
a(b + c) = ab+ac
Please Excuse My Dear Aunt Sally (PEMDAS)
can be used to model equations in one or two variables
an expression that are two-term polynomials with a highest power of 1 that can be used to demonstrate multiplication in an array
a statement that one expression is greater than(or less than) the other
a rule of correspondence connecting the elements of one set with the elements of another set such that each member of the domain corresponds to a unique member of the range