Sidwealk Chalk

I found a recipe for easy to make sidewalk chalk and thought I'd give it a try.   

1 Cup plaster of paris
3/4 Cup Water
Tempra paint

*** This recipe will make enough to fill 5 of the small disposable cups.*** For me it was perfect since everything is color coded around here. 

I decided to use powdered tempra paint instead of liquid just for fun.   I was surprised that making sidewalk chalk could be so easy!   Why haven't I tried this before?    The only thing I would do different is not use the plastic cups.  I think paper would be better to help draw out some of the moisture from the middle.  The boys are still complaining that the middles are wet.   Oh well.