Introduction to Computational Thinking
What computational thinking is, the four steps behind it, and how you already use it in daily life.
3 min read
Class 12 · Chapter 2
This chapter teaches you to solve problems the way a computer scientist does: understand the problem, break it into smaller parts, write clear steps that a person or a computer can follow, and then test and improve those steps. Then it moves into logic, the tool computers use to reason. You will work with true or false statements joined by AND, OR and NOT, check them with truth tables, and learn when two expressions mean the same thing or when a statement can never be true. Finally, predicate logic and the quantifiers "for all" and "there exists" let you describe real situations, like a school library, and draw correct conclusions from known facts.
What computational thinking is, the four steps behind it, and how you already use it in daily life.
3 min read
Four steps to solve any problem: identify it clearly, break it into parts, write an algorithm, then test and improve it.
3 min read
How logic lets a computer store facts and rules, follow them, and reach correct, consistent decisions.
2 min read
Propositions are statements that are true or false. Learn simple and compound propositions and the connectives AND, OR, NOT.
2 min read
A truth table lists every true/false combination and the result for each, so you can see exactly how an expression behaves.
2 min read
How to prove that two logical expressions that look different always give the same result, and why that helps.
3 min read
Can a logical statement ever be true? Learn the test for satisfiable and unsatisfiable expressions.
2 min read
Predicate logic looks inside a statement to see the object and its property, using predicates and variables.
2 min read
Two symbols, for all and there exists, that tell us how many objects make a statement true.
3 min read
Using predicates, quantifiers and reasoning to describe a library system and make decisions in it.
3 min read
How logic turns known facts into new, guaranteed conclusions: logical inference and deduction.
3 min read
What computational thinking is, the four steps behind it, and how you already use it in daily life.
3 min read
Four steps to solve any problem: identify it clearly, break it into parts, write an algorithm, then test and improve it.
3 min read
How logic lets a computer store facts and rules, follow them, and reach correct, consistent decisions.
2 min read
Propositions are statements that are true or false. Learn simple and compound propositions and the connectives AND, OR, NOT.
2 min read
A truth table lists every true/false combination and the result for each, so you can see exactly how an expression behaves.
2 min read
How to prove that two logical expressions that look different always give the same result, and why that helps.
3 min read
Can a logical statement ever be true? Learn the test for satisfiable and unsatisfiable expressions.
2 min read
Predicate logic looks inside a statement to see the object and its property, using predicates and variables.
2 min read
Two symbols, for all and there exists, that tell us how many objects make a statement true.
3 min read
Using predicates, quantifiers and reasoning to describe a library system and make decisions in it.
3 min read
How logic turns known facts into new, guaranteed conclusions: logical inference and deduction.
3 min read