📚 Topic Summary
In mathematics, a variable is a symbol (usually a letter) that represents a number or a quantity that can change or vary. Unplugged activities help understand variables by using real-life examples and games instead of computers. This approach makes abstract concepts more tangible and easier to grasp. By using math games, we can explore how changing one variable affects the outcome, reinforcing the understanding of their role in equations and problem-solving.
🧮 Part A: Vocabulary
Match the term with its definition:
| Term |
Definition |
| 1. Variable |
A. A statement that two expressions are equal. |
| 2. Constant |
B. A symbol representing a value that does not change. |
| 3. Expression |
C. A mathematical phrase that combines numbers and/or variables, but does not contain an equals sign. |
| 4. Equation |
D. A symbol representing a value that can change. |
| 5. Coefficient |
E. A number multiplied by a variable in an algebraic expression. |
Match the terms with their correct definitions. For example: 1-D, 2-A, etc.
✍️ Part B: Fill in the Blanks
A ______ is a symbol, usually a letter, that represents a number. A ______ is a fixed value that does not change. In the expression $3x + 5$, 3 is the ______ of $x$, and 5 is the ______. The entire $3x + 5$ is an example of an ______. When two expressions are set equal to each other, it forms an ______.
🤔 Part C: Critical Thinking
Consider a game where you earn points for each correct answer. If 'p' represents the number of points per correct answer and you answered 10 questions correctly, write an expression to represent your total score. Explain how changing the value of 'p' would affect your total score.