UI design for a STEM tablet game

The goal of the app was to teach math using the science behind baseball. The design had to balance gamification—to keep the middle schoolers’ interest while teaching complex math calculations. These screenshots are from a video of a player during initial user testing of this game for The Science of Baseball. The coach on the blue box is walking the student through the calculations which the user makes live using the calculator on the right.

Most of my work was keeping specifications clear an updated between all the team members, and creating finished UI elements for the developer using Sketch app. The game was made in the Unity framework.
This is a working screen for layout using unfinished 3d characters.