2. Secondly, gently unscrew the screw on the shell of the rubber duck early education machine with a screwdriver and disassemble the shell. After disassembling the shell, you can see the circuit board in the rubber duck. Gently unscrew the screws on the circuit board with a screwdriver to remove the circuit board.
3. Finally, after the circuit board is disassembled, you can see the battery of the rubber duck. Gently unscrew the screw on the battery with a small hammer, and you can remove the battery. After disassembling the battery, you can see the rest of the rubber duck. Gently unscrew the screws on other parts with screws and remove other parts.