Shear Stress and Moments can easily be computed using the TiNSpire CX : Just open up Statics Made Easy (Download at www.tinspireapps.com ) , press MENU and go to Statics : Transverse Shear Stress
There, read the definitions of all variables.
Next, enter all but 1 box and the accurate answer is displayed.
Besides Shear Stress , other important Static quantities can be computed such as forces, moments, equilibrium, vectors, friction, centroids, moments of inertial, radius of gyration, projectile motion (dynamics) and much more.
Dont forget : you can always download the trial version at https://www.tinspireapps.com/trials/