The Little Professor is a backwards calculator designed for children ages 5 to 9. Instead of providing the answer to a mathematical expression entered by the user, it generates unsolved expressions and prompts the user for the answer.
Famous quotes containing the word professor:
“You’ll admit there’s always the possibility of some employee becoming disgruntled over some fancied injustice. Dissatisfaction always leads to temptation. There’s always purchasers for valuable secrets.”
—Joseph O’Donnell. Clifford Sanforth. Donald Jordan, Murder by Television, trying to bribe Perry into revealing Professor Houghland’s secret (1935)