In this lesson, learners of all ages get an introductory experience with coding and computer science in a safe, supportive environment. This lesson has two versions. This version uses both drag-drop blocks and JavaScript. Students need to be able to type on a keyboard. For older students on computers, learning JavaScript can be fun and provide an additional challenge. This version of the tutorial is also great if you have some students in your class who have already learned some coding. It is recommended for ages 11+.

A Blockly version is also available and recommended for students on mobile devices without keyboards, younger students, and international students.