Instruction: Which of the following are perfect square roots? Classify them as 'perfect' and 'not perfect' - 1, 23, 4, 6, 9, 10, 42, 112, 81, 100, 55, 16, 32, 25.

Response: 'perfect', 'not perfect', 'perfect', 'not perfect', 'perfect', 'not perfect', 'not perfect', 'not perfect', 'perfect', 'perfect', 'not perfect', 'perfect', 'not perfect', 'perfect'.