LeafSnap. Try the free app, LeafSnap. This app created by (add). Take your device outside and snap pictures of leaves, and then watch as the app helps you identify them. Not only does this app serve as a field guide, it also provides gorgeous, detailed photos of the cycle from the blossom to the leaf. Next time you take a walk, take along this app and see what you can find. Or better yet, create a scavenger hunt using LeafSnap.
Star Walk - 5 Stars Astronomy Guide. Take this app outside with you during your next camping trip, or stargazing adventure and you won't be disappointed. Not only will this app help you identify that constellation outside your bedroom window, it also has many other great features like the Time Machine where you can view the sky from a different point in time, past or present.
These suggestions are just a quick snapshot of the ways you can engage children in the great outdoors with the help of technology.