Create algebraic expressions and evaluate them by substituting a given value for each variable(ACMNA176)
LO: To create algebraic expressions and to understand the differences between a coefficient, variable and constant.
Know:
- What an expression is
- The four basic operations of numeracy
Understand:
- That expressions can be created
Do:
- I can create algebraic expressions
Essential Questions:
- What is an expression?
- How can algebraic expressions be created?
What is an Expression?
An expression is one-half of a equation.
x – 6 is an expression.
x – 6 = 10 is an equation.
Equations always have an = sign.
It makes sense, equations has the word equal in it.
Coefficient is a number in front of a variable.
Variable is the letter that is the “missing value” of an expression.
Constant is a number that is included as part of an expression.
