![]() It quickly became clear that we’d have to put our rush to implement features on hold in order to iron out some annoying issues with the editor. In fact, during my internship my mentor and I worked on functionality to use Perseus to write our articles. Perseus is becoming more and more useful to us. Those are sad faces, if you couldn’t tell. ![]() This live exercise features a transformer widget. For example, the animation above features an image and a number line widget. Perseus, which is what you see in that animation above, allows for easier interactive content creation through widgets. As you can imagine, this made scaling up work on content difficult. However, to write exercise content, content writers essentially had to know how to program. Before we had Perseus, we had a framework called Khan Exercises. ![]() Our exercises are created using Perseus, a question editor and renderer that makes it simple to create interactive problems. For example, the image URL is copied over properly and the number line’s starting value is still 3 after being copied and pasted back and forth between the two text boxes. Notice that the copied content is just text, but when it’s pasted the metadata associated with the text is copied over properly. This little feature implements more sophisticated copy-pasting for the interactive widgets we use for our exercises and articles, making life for our content creators easier.
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