Math All Around (Set of 4)

Rebecca J. Allen writes middle-grade stories that blend mystery and adventure, and young adult stories with kick-butt heroines. She is the author of two STEM superhero adventures--Cole Champion Is Not Super and Cole Champion Takes on the Villains--as well the nonfiction book, Earning an Income. She lives in New Hampshire with her husband, two kids, and Emmy the cat. When not writing, Rebecca likes to hike, bike, watch spy thrillers, and grow yummy things in her garden. You can find out more about her books at RebeccaJAllen.com. She's also on Twitter and Instagram as @RebeccaJ_Allen.