DIY Parallel Series Circuit Learning Kit Physics Science Experiment Project for Children Students Item Type: Circuit Learning Kit Material: Plastic Size: Approx. 8 x 10 x 5cm / 3.1 x 3.9 x 2in Suitable Age: Above 2 Years Old Users: Primary school students/small science experiment enthusiasts Battery: AA battery x 2pcs (not included) Experimental Steps: Step 1: Install the battery box on the screw plate Step 2: Connect the wires to both ends of the lamp holder, and fix them with double-sided adhesive. Step 3: Connect the wire to the switch. Step 4: Fix the switch on the screw plate, install the bulb, and complete the assembly Safety Tips: Small parts inside. Please be sure to operate safely under the guidance of teachers or adults. Beware of damage to parts due to overexertion.