The Backlist Readathon [march 7-13, 2021] - hosted by jacqiewheeler

Read a middle grade backlist
Middle-grade fiction refers to books written for readers between the ages of 8 and 12, while young adult fiction refers to books written for readers roughly between the ages of 12 and 18. The terms reflect the reading level, world-view, thematic interests, and maturity of readers.

To read a book for this prompt, the book needs to be published before 2021, and have a middle grade reading level. 
All books added

192 pages first pub 1865 (editions)

fiction classics fantasy middle grade adventurous funny lighthearted fast-paced

240 pages first pub 2000 (editions)

fiction dystopian middle grade adventurous mysterious medium-paced

Matilda

Roald Dahl

240 pages first pub 1988 (editions)

fiction classics fantasy middle grade funny lighthearted fast-paced

305 pages first pub 2019 (editions)

fiction middle grade mystery adventurous mysterious fast-paced

253 pages first pub 2017 (editions)

fiction fantasy middle grade adventurous funny lighthearted fast-paced

329 pages first pub 2003 (editions)

fiction fantasy middle grade adventurous funny lighthearted fast-paced

448 pages first pub 2019 (editions)

fiction fantasy middle grade young adult adventurous medium-paced

149 pages first pub 1970 (editions)

fiction classics middle grade funny lighthearted fast-paced

337 pages first pub 2014 (editions)

nonfiction memoir middle grade poetry race emotional inspiring reflective medium-paced

224 pages first pub 2009 (editions)

nonfiction graphic novel memoir middle grade funny lighthearted fast-paced