What a cool thing to teach the little ones. I believe hydroponics will be the way 80%+ of all our veggies will be produced in another 20 years, if it takes that long.
The acreage needed to grow using traditional dirt farms is becoming too hard to maintain and supply enough produce.
In another 50 years, every school child in the world will know how to make and use hydroponic gardening to grow vegetable crops.
I really belive that.