Some days require making something "explode". Thankfully we have baking soda and vinegar on hand most of the time.
It was fun to try different bottle sizes before finding the right height for maximum bubble and fizz. And, it was a hoot talking about what it means to make a prediction or hypothesis. There were certainly some pretty funny guesses about what was going to happen. Three is such a fantastic age...most days ;-)
Yay for science!