Khan Academy
Khan Academy: The Building Blocks of Algorithms
Learn the building blocks of algorithms in computer science.
Khan Academy
Khan Academy: Storing Data in Variables
Find out how computer programs instruct computers how to process data.
Khan Academy
Khan Academy: Mathematical Expressions
A computer can compute results for them in a fraction of a second. Find out how we actually get the computer to do math for us?
Khan Academy
Khan Academy: Number Limits, Overflow, and Roundoff
Learn about the limitations of storing numbers in computer programming.
Khan Academy
Khan Academy: Random Numbers
See how we can generate random values in our computer programs, and use those to make decisions and simulate natural processes.
Khan Academy
Khan Academy: String Operations
Computer programs don't just store strings, they also manipulate them. With string operations, we can chop strings up, mash strings together, or transform strings in all sorts of ways. Learn how here.
Khan Academy
Khan Academy: Computer Malware
Learn about malware, how it is installed on a computer, and what type of damage it can do.
Khan Academy
Khan Academy: Computer Networks
Learn about the internet, the world's largest computer network.
Khan Academy
Khan Academy: Numbered Repetition of Instructions
Computer programs are full of repetition, since our programs automate and simulate the world around us. Programmers use for loops to repeat a set of instructions a specific number of times.
Khan Academy
Khan Academy: Public Key Encryption
Learn how public key encryption can protect computer data.
Khan Academy
Khan Academy: Symmetric Encryption Techniques
Learn how symmetric encryption techniques help protect computer data.
Khan Academy
Khan Academy: Encryption, Decryption, and Cracking
Find out about data encryption, decryption and cracking computer data to avoid virsus and cyberattacks.
Khan Academy
Khan Academy: The Need for Encryption
Find out why we need to encrypt computer data to avoid hackers.
Khan Academy
Khan Academy: Conditionals With If, Else, and Booleans
A tutorial explainning the use of if, else, and Boolean logic in computer programming.
Khan Academy
Khan Academy: Nested Conditionals
Learn how nested conditionals work in computer programming.
Khan Academy
Khan Academy: Compound Booleans With Logical Operators
Learn about computer programming using compound booleans with logical operators.
Khan Academy
Khan Academy: Internet Routing Protocol
Learn how computers split messages into packets and those packets hop from router to router on the way to their destination.
Khan Academy
Khan Academy: Physical Network Connections
Learn that the internet is a network of computers connected to each other. But what does each physical connection look like? It depends on the needs of the connection and the size of the network.
Khan Academy
Khan Academy: Computer Science: The Internet Protocol Suite
Learn about the many protocols that power the Internet, and how each protocol operates at a different layer, building functionality on top of the layer below it.
Khan Academy
Khan Academy: Procedures With Return Values
Procedures can compute values for the rest of the program to use by sending back return values.
Khan Academy
Khan Academy: Procedures With Parameters
When programming, we use procedures to make our code more reusable and to better organize our code. Often-times, we pass parameters to a procedure so that we can change the output of the code.