A method that is performed by a computer system that includes a keyboard and a computer display. The method includes retrieving a keyword and displaying, on the computer display, a question and a partial answer to the question. The partial answer to the question does not include the keyword. However, the partial answer does indicate the location of the keyword in the partial answer. The method also includes receiving a character that was entered into the keyboard by a user and comparing the character to the first character in the keyword. If the character is not equal to the first character in the keyword, the computer system does not display the character on the computer display. However, if the character is equal to the first character in the keyword, then the computer system displays the keyword on the computer display.