In this episode of Tech Talk Tools, Mark and Colin uncover one of the most underrated features of the Casio fx-991EX — its ability to perform quick and accurate linear interpolation. Whether you're a student, engineer, or science enthusiast, this episode will guide you through how to use the interpolation calculator effectively to save time and avoid errors. Learn how to access the right modes, input values, and interpret results with ease. If you own this scientific calculator, you’re about to unlock a powerful tool you didn’t know you had!