**Definition:**
Logic is the study of reasoning and argumentation, focusing on the principles that guide valid inference and correct reasoning.

**Key ideas:**
- Logic helps in understanding how to construct valid arguments.
- It involves the use of symbols and formal systems to represent reasoning.
- Logical reasoning is essential for problem-solving in mathematics and science.
- It provides tools for evaluating the truth of statements and arguments.

**Why this topic matters in this category:**
Understanding logic is crucial for students in mathematics and science as it enhances critical thinking and analytical skills.