We are strong proponents of teaching "computing" to students of all ages. What do we mean by computing? Many things:
- Using a computer to achieve goals, like being able to type, using a spreadsheet program, editing video, etc.
- Understanding how to program a computer using one of the many programming languages in the world, either to solve math and science problems or to create interactive apps, games, and experiences.
- Gaining a deep understanding of the science and engineering of computers, both on the hardware side (electrical engineering) and the software (algorithms).
We hope that just using Khan Academy will give students a little bit of that first aspect, and inside our "Computing" area here on Khan Academy, we're formally teaching the second aspect ("Computer Programming") and the third aspect ("Computer science").
In our "Computer science" subject, we teach an Intro to Algorithms, appropriate for students who've completed Algebra 2 (logarithms, graphs) and already learned programming fundamentals. We also teach an introduction to Cryptography and Information Theory, which don't require a knowledge of programming.
In our teacher's guide, we focus on how you can teach Intro to JS, which is both a fun and practical way for students to get started programming, and the most popular way to learn programming on Khan Academy. These resources should help you teach programming in your classroom.
The curriculum is viewable here: https://www.khanacademy.org/programming
Topics covered, in order:
- Basic statement syntax
- Math operators, assignment operators
- Logic and conditionals
- Object-oriented JS
Our course is made up of three types of materials:
- Talk-throughs: These are our approach to videos, the way that we teach new concepts. Like Khan’s videos, they’re around 5 minutes long and teach one concept at a time. We present the code on the left, output on the right, and narrate as we write new code, while the output updates live. The student can pause the talk-through at any point, change the code, and see the new output, which is one way we encourage more interactive learning. The talk-throughs have transcripts for deaf students, and are partially translated into Spanish, French, and Portuguese.
- Challenges: This is how we assess whether students understand the concept we just taught, and there is one challenge for every talk-through. Each challenge starts off with some code and has a series of steps with instructions and hint code for each step. We analyze their code as they type and offer messages to guide them in the right direction, when we see they’ve made a common mistake. When they complete the steps, they earn points and their progress is logged on their activity dashboard.
- Projects: The projects are our opportunity to give students to be very creative with the concepts they’ve just learnt. They have a general set of guidelines but students can take them in their own direction. For example, after learning how to draw and color, students do “What’s for Dinner?”, drawing their favorite dinner on a plate using the commands they’ve learnt. They are not currently graded for these projects, but a code review process is currently being developed for them.
- Review articles: These are a great way for students to review what they've just learned, both immediately after learning it and later on as a refresher.
The course currently consists of 40 talk-throughs, 35 challenges, and 10 projects. On average, the talk-throughs are 6 minutes long, the challenges take 5 minutes each to complete, and projects are often completed in 10-40 minutes, depending on how far the student wants to take them. There is thus around 15 hours of curriculum.
The curriculum is designed to be learnable by 4th graders and up. Math-wise, it requires the student to be comfortable with fractions/proportions, the idea of one number being a fraction the size of another, and that is a topic that is required in 3rd grade math in the US. Besides that, students should feel comfortable with typing.
This curriculum and platform works on modern browsers (Chrome, Firefox, Safari, IE9+). It works on the iPad, but students may find it's not as enjoyable to type on that keypad.
The curriculum is mostly translated to Spanish, with interactive subtitles for the talk-throughs (not dubbing). There is partial translation for Portuguse, Hebrew, Polish, and French. If you are able to help with translation, you may be able to sign up as a volunteer translator. For details on translating the messages in the challenges, read this post. For details on writing subtitles for the talk-throughs, read this post.
This curriculum is usable by deaf students. There is a transcript option available for the talk-throughs, which are the only aspect of the curriculum with audio. Click the gear menu next to the play bar and select "Interactive Transcript". Students can pause if it is going too quickly.
The platform for delivering the curriculum was developed by full-time Khan employee John Resig, with help from Pamela. John is well known for having created jQuery, the most popular JS library in the world, and is very active in the JS community.