Condition -   Acceptable - Ex School Book with inscription on first and last page
Hardback 
 
This book is designed for use with (and provides instructions for operating) any standard algebraic pocket calculator. 
 
Without exception, the inexpensive models currently sold are of this type. But if your children have a different type, such as the kind that uses reverse Polish notation (RPN) or the kind with more than one function sign on certain keys, you will have to show them how to work it.