Learn German: Du entfernst die Schale, indem du daran ziehst.

indem is a connecting word (subordinating conjunction) that explains how an action is done, translating to "by doing something" in English. Like other subordinating conjunctions you have learned, it forces the conjugated verb (ziehst) to the very end of its clause.

Why does the sentence use daran instead of an sie (on it)?

In German, when a preposition like an refers to an inanimate object (like die Schale), you do not use regular personal pronouns. Instead, you use a "da-word". You combine da plus the preposition. Since an starts with a vowel, an r is added in the middle for smoother pronunciation: da + r + an = daran.

Why is the preposition an used with ziehen?

The verb ziehen (to pull) commonly pairs with the preposition an when you want to express pulling on or tugging at something. The underlying phrase here is an der Schale ziehen (to pull on the skin).

I thought die Schale meant "the bowl". How do I know it means "skin" here?