we had to put rocks on top of each bucket because it was so windy they kept blowing over! so we are not sure whether we will be able to continue teaching her or not. but the necessary technology would be challenging to develop and put in place on large scale. correct answers are shown in green, whereas wrong answers show up in red. quality material, look like they will last a long time and take a lot of punishment. it’s a future that can actually grow and it can live beyond us. 