September 18

Parent Letter Unit 2: Expressions & Equations

Dear Parents,

Below is information regarding Unit 2: Expressions & Equations. Look for additional information for future units.

Expressions & Equations

By the end of this unit, students will understand that:

  • Variables can be used to represent numbers in any type mathematical problem.
  • Understand the difference between an expression, an equation, and an inequality.
  • Expressions are simplified and equations are solved for the variable’s value.
  • Write and solve multi-step equations including all rational numbers.
  • Expressions, equations, and inequalities can be used to represent and solve real world problems

Vocabulary

  • Algebraic Expression: an expression consisting of at least one variable and also consists of numbers and operations
  • Numerical Expression: an expression consisting of numbers and operations
  • Coefficient: the number part of a term that includes a variable. For example, 3 is the coefficient of the term 3x
  • Constant: a quantity having a fixed value that does not change or vary, such as a number. For example, 5 is the constant of x + 5
  • Equation: a mathematical sentence formed by setting two expressions equal
  • Inequality: a mathematical sentence formed by placing inequality symbols ( >,<,≥,or ≤) between two expressions.
  • Term: a number, a variable, or a product and a number and variable.
  • Variable: a symbol, usually a letter, which is used to represent one or more numbers.
  • Try: http://intermath.coe.uga.edu/

Web Resources

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