Hands On Equations:  Investigation 3: Creating Equivalent Expressions
 Arnold Worksite Student Resources Danicek Worksite Student Resources Grimmer Worksite Student Resources Equations With Variables  Core Support Files NCTM Algebra Activities NCTM Resources Work through the sequence of activities and tests at Bitesize Math​ Introduction to Formulas Multiplication Equations​ Division Equations Addition Equation​ Chopper Fractions Functions Machine​

 Vocabulary
 Picture Vocabuary Order of Operations PEMDAS: first--> Parenthesis, Exponents, Divide, Multiply, Add, Subtract (last) Not following the order can lead to wrong solutions. Expression A mathematical phrase that combines numbers and/or variables using mathematical operations. An expression is a representation of a value; for example, variables and/or numerals that appear alone or in combination with operators are expressions. 5 + 6 – (3 + 2)/18 a + b – c Variable Variables are (usually) letters or other symbols that represent unknown numbers or values. a, b,c, n, x, y, z, speed, distance Equation A mathematical sentence that uses the equal sign (=) to show that two expressions are equal.     10 + 2 = 12     4a - 3b = 1