Associated Press: News Corp. said it has laid off about 500 of the 900 employees at its money-losing Amplify educational unit and sold it to managers and private investors for an undisclosed amount. The move comes after the publishing company booked a $371 million write-off on the Amplify business, which sought to sell tablets to schools and develop a digital curriculum. The business lost $93 million in the year through June on $109 million in revenue.