Why? How come? Science Stories for 1st Graders Why? How come? Everyday Mysteries for 1st Graders Please refer to the images for the contents. Set of two books. There should be no writing, but please forgive any oversight. There is almost no yellowing. As the perception of condition varies from person to person, please understand that these are used books owned by an individual, and those who are concerned about details should refrain from purchasing. ⭐︎I am also listing other reading materials and educational manga for elementary school students.⭐︎