Choose the next book in a series and use knowledge from earlier books to read the new one more easily.
A series is a group of books that share the same characters or world, often by the same author. Once you know book 1, book 2 gets easier, because you already know the characters and the setting.
That head start is called momentum: using what you already know to read faster and understand more in each new book of the series.
Mastery looks like: They select the next book in a familiar series and use prior knowledge of characters and setting to read it more fluently.
Common stumbles: Starting a series out of order, which removes the very head start that makes series reading easier.