Each group needs:

• Brownlee electrolysis apparatus, such as these available at Amazon; prices vary, $30+
• baking soda (or vinegar), as an electrolyte (perhaps two or three teaspoons of baking soda)
• 2 platinum electrodes with fitted rubber stoppers, such as two for $56 from Fisher
• solar panel (or battery eliminator), such as this medium 6V 2W solar panel for $35 from Adafruit
• multimeter or voltage meter
• Redox Reactions and Alternate Energy Solutions Handout, one per student
• safety glasses or goggles, one pair per student

To share with the entire class:

• electrolysis setup for class demonstration
• matches
• safety glasses or goggles
• distilled water
• (optional) AA battery