Here you will find lessons using the characters from the In The Woods series or curriculum based  plans on the use of addition or subtraction.
Building Addition and Subtraction Skills through Literature
Upper Grade Math Lessons (Grade 3-5)
Summer The Firefly
~Lesson –Â 3digit addition ITWÂ
Dominoes Around the WorldÂ
~Lesson:Â http://mathwire.com/numbersense/dominoes.html
Math Sites that Connect to Literature
https://www.the-best-childrens-books.org/math-for-kids.html
https:///best-books-to-teach-addition-and-subtraction/
https://www.hmhco.com/products/do-the-math/math-reads/books-topics.htm#grade3