Instruction 1-1
VARIABLES AND EXPRESSIONS
Student's Links
http://www.mathleague.com/help/algebra/algebra.htm#variables (Explanation)
http://www.purplemath.com/modules/variable.htm (Variables)
Parents' Link
http://www.math.com/school/subject2/lessons/S2U2L3GL.html(Evaluating Expressions)
Teachers' Link
http://www.mathgoodies.com/lessons/vol7/expressions.html (Lesson Plan)