Are you looking for a rigorous, engaging way for your students to master 4.MD.B.4? In this 4th Grade Math Mystery, students don't just "look" at data—they build it! Every clue in this resource requires students to construct a line plot from a data set and then analyze that data to uncover a secret code. This digital (with Google Slides/Easel) and printable resource combines the high-stakes fun of a superhero detective case with crucial math practice, making it a classroom favorite that's pa