We’ve posted lessons 4-10 of the TI-89 Calculator Tutor:

Lesson 4 – Basic Arithmetic and Exponents
Lesson 5 – Calculating with Fractions
Lesson 6 – Logarithms and Square Roots
Lesson 7 – Sin, Cos, Tan, and other Trig Functions
Lesson 8 – Storing and Using Variables
Lesson 9 – User Defined Algebraic Functions
Lesson 10 – Solving Algebraic Equations and Inequalities