I have seen this balloon blow up project around the web for some time and have always wanted to give it a try with my kids. Finally we got around to it and I can’t believe we waited so long, not only because it is really cool but because it was so easy to do.
We actually did this twice once with my little one when her big sister was at school (otherwise she would not get a chance to really see it) and then again when big sister got home. I figured we could do it twice and then both girls could do it and see how cool it is.
My little one thought it was really neat but when the balloon first started to blow up the bottle was sitting right in front of her and she got a little scared and pushed it away. But once she realized it would not hurt her she liked it.
My older daughter was convinced that the balloon was going to POP and would not take her hands off her ears no matter how often I told her that would not happen. However be warned if you use more baking soda & vinegar than I listed below then it could happen. I only used a little so that we could see the reaction but did not want the balloons to pop and scare the kids.