Take Note: Child's play?; Underwater mystery

The Omaha school district has alerted teachers to be on the lookout for a new toy showing up in mathematics classes: a pocket-sized calculator that students could use to cheat on exams.

The Sega IR 7000 can organize schedules, convert currency, translate languages, and sound an alarm. It can also send messages via infrared sensors to another Sega IR 7000, allowing students to share answers.

"I was appalled by it," said Marilyn Tipp, a parent in Omaha who learned about the calculator from an ad in one of her son's magazines that touted the high-tech toy...