The Perfect Math Learning Tool With Approachable and Intuitive New Design. FX-991CW Non Programmable Scientific Calculator. The new ClassWiz CW Series is designed for the teaching and studying of today. With its new design and key placement, it can be used by anyone. Includes MathBox, a fun math learning feature The Casio FX-991CW Calculator is an approachable and intuitive design. The new display and key layout make navigation and operation smooth, enabling students to focus on learning while making it easier for teachers to demonstrate complex functions• Model: Fx 991cw calculator Type: Scientific Calculator. Classwiz.Matrix Calculation.Non Programmable, Display: Dot Matrix Display.Number of Functions: 540+.Key: Plastic keys & smooth keys, Power Info: Power Sources Solar & Battery