Learn to code in 60 seconds #programming #computerscience #python #khanacademy

less than 1m read

·Nov 10, 2024

Learn to code in 60 seconds. A program is a coded set of instructions for a computer to execute. Programs manipulate data, which come in several data types: integers, that's whole numbers; floats, have decimal points; booleans, true or false; and strings, of characters (don't forget the quotation marks).

Need to store a piece of data for later use? A variable names its location and points to it. Have a bunch of data? Organize it with a data structure. Lists store data in an ordered sequence, but we start counting at an index of zero. Dictionaries associate each piece of data with a key for easy lookup.

To make decisions in a program, ask a question with a Boolean expression. Then, choose which path to take with an if statement. To repeat a code routine, use a loop. A while loop repeats until the answer to your question becomes false. A for loop repeats a fixed number of times.

Have a lot of code? Break it down into smaller tasks with functions. Customize the function with input arguments and call the function to execute its task. Did you catch all that? Take it at your own pace with Khan Academy's intro to computer science course.

COVID-19, Humans, and Wildlife: What Do We Know? | National Geographic

Would You Choose Life On Earth Or in Space? #kurzgesagt #shorts

View All

Graphing two variable inequality

So what I would like to do in this video is graph the inequality negative 14x minus 7y is less than 4. And like always, I encourage you to pause this video and see if you can graph it on your own before we work through it together. So the way that I like…

Clarifying standard form rules

We’ve talked about the idea of standard form of a linear equation in other videos, and the point of this video is to clarify something and resolve some differences that you might see in different classes in terms of what standard form is. So everyone agr…

7 Principles for AI in Education: Part 1 of 2

So hello everyone, I’m Kristen Deso. I’m the chief learning officer at KH Academy. I want to lay the groundwork a little bit for why we’re here. The first part is because I’m sure all of you are bombarded by the messages around artificial intelligence. W…

Capturing Death - What One Photographer Learned on Assignment | Exposure

How do you want to die? Is really the question. You know, what is the quality of your death? What is the quality of a good death? It is the thing that we’re most afraid of. You’re going to die. You will be no more. Who, whoever it is that you believe you …

Le Chȃtelier’s principle: Changing concentration | Equilibrium | AP Chemistry | Khan Academy

Le Chatelier’s principle says if a stress is applied to a reaction mixture at equilibrium, the net reaction goes in the direction that relieves the stress. Changing the concentration of a reactant or product is one way to place a stress on a reaction at e…

Do Sharks Hunt Cooperatively? | Shark Attack Files

In a remote atoll near Tahiti, Corey Garza, Andy Casagrande, and safety diver Perrick Seibold put themselves in the line of fire. These investigators test the theory that some tiger sharks may work together and hunt in packs. Before they know it, they’re …

Learn to code in 60 seconds #programming #computerscience #python #khanacademy

More Articles