The best way for fourth-graders to read extra-cursory books is to help them expand their knowledge and cultivate their interest and ability in reading. Here are some recommended books for this age group: 1 The Little Prince (Antoine de Saint-Exupéry): This is a classic fairy tale novel suitable for primary school children. Through the little prince's adventures, children could learn about friendship, responsibility, growth and other topics. Harry Potter series (JK Rowling): This is a magical novel suitable for readers of all ages. Through Harry Potter's experience, children could learn about courage, friendship, faith, and other topics. 3. Journey to the West series (Wu Chengen): This is a mythical novel suitable for readers of all ages. Through the adventures of Sun Wukong, Zhu Bajie, and Monk Sand, children can learn about topics such as justice, courage, and friendship. Grimm's Fairy Tales (Jacob Grimm and William Grimm): This is a classic collection of fairy tales suitable for primary school students. Through the fairy tales collected by the Brothers Grimm, children could learn about morals, kindness, and justice. Encyclopedia: This is a large and comprehensive encyclopedia suitable for primary school students. By reading the encyclopedia, children can learn about various topics such as science, history, culture, art, etc. It should be noted that primary school students have different interests and abilities in reading. The books that are suitable for them should be selected according to their interests and abilities. At the same time, parents should share the joy of reading with their children to help them develop the habit of reading.