We did a volcano theme because the children were so interested in singing I Lava You when they learnt it in school. That was so cute to hear them singing it together! So I tried to cobble something for them from the good, ol' Internet. Listing out some of these activities and free printables if you want to try with your kids!
What is a volcano theme without our classic volcano science experiment? All you really need are 2 ingredients - baking soda and vinegar. If you are feeling more adventurous, you can use grey/brown plasticine to mould it into the shape of a volcano. This is great exercise for those little fingers! Some red paint or food colouring. We also did a little extension activity where I taught Kyra to collect the gas and test for it using a flame. Now she knows if the flame extinguishes, it is carbon dioxide; if the flame grows brighter, it is oxygen. She sometimes still mixes the 2 and calls it carbon dioxygen. I don't know... More experiments needed?