Watching a bubble freeze shows how water turns into ice crystals right before your eyes – a little science moment that amazes kids and grown-ups alike. In warm places you can try it in the freezer.
The steps are in the app
Step-by-step instructions, tips and an easier and a harder version are waiting in the Hopsa app – along with 300 more ideas matched to your kids’ ages.
Coming soon to the App Store and Google Play
