I have written and cowritten a number of books for teachers and students related to using calculators in mathematics education. Some of these are now no longer available, but are retained below for completeness.
Learning Mathematics with ES PLUS Series Scientific Calculator Barry Kissane & Marian Kemp Published by CASIO, Japan 2014, 169 ppThis book is intended for students and teachers, with mathematical interests in the junior and senior secondary school. As well as detailed explanatory text, with many screen dumps, the book includes calculator exercises (with answers) and exploratory activities, as well as some notes for teachers. Covers many aspects of mathematics in fifteen separate modules including functions, equations, trigonometry, data analysis, probability, sequences and series, vectors, recursion, matrices and elementary calculus. The book is written for a particular calculator (CASIO fx991 ES PLUS), but many aspects are also relevant to related ES series calculators. This book is available for free download as a pdf from CASIO's WEW site at http://edu.casio.com/education/activity/ or via Murdoch's Research Repository at http://researchrepository.murdoch.edu.au/24812/ 

Learning Mathematics with Graphics Calculators Barry Kissane & Marian Kemp Published by CASIO, Japan 2014, 225 ppThis book is intended for students and teachers, with mathematical interests in secondary school. As well as detailed explanatory text, with many screen dumps, the book includes calculator exercises (with answers) and exploratory activities, as well as some notes for teachers. Covers many aspects of mathematics in seventeen separate modules including functions, geometry, equations, trigonometry, data analysis, probability, sequences and series, complex numbers, recursion, matrices and elementary calculus. Three of the modules are for a colour version of the graphics calculator. The book is written for two particular calculators (CASIO fx9860G II and CASIO fxCG20), but many aspects are also relevant to related graphics calculators. This book is available for free download as a pdf from CASIO's WEW site at http://edu.casio.com/education/activity/ or via Murdoch's Research Repository at http://researchrepository.murdoch.edu.au/24814/ 

Mathematics with a graphics calculator: Casio fx7400G Here is a book review. 

More mathematics with a graphics calculator: Casio cfx9850G Published by MAWA 1997 Here is a book review. 

Exploring Mathematics Using a TI80 Graphics Calculator Barry Kissane, Jen Bradley & Marian Kemp Published by MAWA 1997 This book is intended to help both secondary school students of all ages and their teachers use a Texas Instruments TI80 graphics calculator for learning and doing mathematics. Apart from detailed advice for using the calculator, the book contains exercises to focus on how the calculator can be operated efficiently and activities that focus on using the calculator to explore mathematics. A wide range of mathematical ideas are involved including calculation, graphing and tabulating functions, chance and data, sequences and series, iteration and recursion, equations and inequalities, programming and calculus. Much of the material in the book is also relevant to other Texas Instruments calculators, including the TI82 and TI83. 
The following books are available from the CASIO Edu website:
Enhancing Learning
Edited by Anthony Harradine, Barry Kissane & Gary O'Brien Published by Shriro 2002 
Programming your calculator:
