Watercolours

For my drawing class this week, I need some tubes of watercolour. I didn’t even know you could buy such things but I had a look through all my supplies to see if I have anything that might be suitable to use. I found this watercolour set that used to belong to my dad which does have a small tube of each of the primary colours, but I couldn’t get the tops off to see if they might be usable - I hate to think how old they are! So I’ll just have to manage with some watered down gouache - I don’t particularly want to be going into a town to find any supplies, and I don’t really have time to do that either now, and I’ve left it a bit late to get anything online. Hey ho!