What is a Simple Variable Expression?

What is a Letter as a Placeholder for a Number?

What is an Equation with Missing Information?

What is a General Rule for a Pattern?

What is the Term 'n' in a Sequence (simple)?

What is a Sequence of Numbers in a Table?

What is a Pattern Using Numbers and Shapes?

What is a Pattern Using Geometric Shapes?

What is a Rule for a Simple Input-Output Relationship?

What is Writing a Mathematical Statement with Variables?

What is a Variable in Everyday Life (simple examples)?

What is Keeping an Equation Balanced?

What is Making Both Sides Equal?

What is a Simple Equation as a Puzzle?

What is a Relationship Between Numbers and Letters?

What is a Simple Algebraic Identity?

What is the Use of Brackets in Simple Expressions?

What is a Pattern Found in a Sequence of Operations?

What is a Rule Using 'divide by'?

What is a Rule Using 'multiply by'?

What is a Rule Using 'subtract from'?

What is a Rule Using 'add to'?

What is a Graph of a Simple Pattern?

What is a Table of Inputs and Outputs?

What is a Sequence of Numbers with a Common Ratio?

What is a Sequence of Numbers with a Common Difference?

What is a Pattern of Odd Numbers?

What is a Pattern of Even Numbers?

What is a Pattern with Decreasing Steps?

What is a Pattern with Increasing Steps?

What is a Missing Value Problem?

What is a Problem with an Unknown Value?

What is Solving a / x = b?

What is Solving x / a = b?

What is Solving a * x = b?

What is Solving a - x = b?

What is Solving x - a = b?

What is Solving x + a = b?

What is a Simple Equation with Division?

What is a Simple Equation with Multiplication?

What is a Simple Equation with Subtraction?

What is a Simple Equation with Addition?

What is an Equation Involving Variables?

What is an Expression Involving Variables?

What is a Variable Representing an Unknown Value?

What is a Variable Representing a Quantity?

What is a Simple Literal Equation?

What is an Equation with one Variable?

What is a True or False Equation?

What is Finding the Missing Number in an Equation?