Calculator Games 40 MindBoggling Games Tricks includes multifunction solarpowered calculator Author:Raymond Miller, Michelle Martin INCLUDES A MULTI-FUNCTION, SOLAR-POWERED CALCULATOR. — Amaze your friends with your incredible number-crunching ability. Use your calculator to perform amazing number tricks, solve riddles and puzzles, and play games. — * Solve riddles and crossword puzzles — * Play "digital" baseball with a friend — * Discover someone's birthday without knowing th... more »e date.« less