1. 按下綠旗 (press the green flag) 2. 輸入一個數字然後按下Enter鍵（可正可負） (input a number, either positive or negtive, and the press "Enter") 3. 輸入加("+")或減("-") (input "+" or "-", and the press "Enter") 4. 再輸入一個數字然後按下Enter鍵（可正可負） (input a number again, either positive or negtive, and the press "Enter") 5. 請輸入你算出來的答案。 (input your answer) 6. 貓咪會告訴你答對或答錯。 (The cat will let you know you're right or wrong.)
