Hopsa
Guessing before testing is the heart of scientific thinking. Your child makes a hypothesis (“The key will sink because it’s heavy”) and then discovers surprises – like a big apple that floats and a tiny pebble that sinks.
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
