National Treasures is fun, exciting and beyond adventurous. Today in crafts with Aero, we are going to be making fantastic fizzing treasures. With a few simple ingredients and small treasures to hide, it will be one cool experiment! Watch the video and check it out! 

Materials: 

• Water 
• Baking soda 
• Vinegar 
• Coins 
• Small bowls 
• Tablespoon and teaspoon 
• Food colouring (optional) 
• Tin Foil or parchment paper 

Instructions: 

1. In the bowl, add in 3 tablespoons of baking soda and 1 teaspoon of water. Optional to add in a few drops of food colouring. Make sure the consistency is wet enough to shape in your hands, but not too watery! 
2. Make a ball about the size of half a teaspoon using the baking soda mixture. Add in a coin or secret treasure inside the middle. 
3. Place the treasure stones on a plate lined tin foil or parchment paper. 
4. Repeat this step with the variety of colours you desire in a separate bowl. 
5. Place them in the freezer for AT LEAST 1 hour. 
6. Once they are ready, take them out of the freezer and drop them into a bowl of vinegar one by one and watch them fizz! 
7. Make sure you go and find the treasures in the bowl!