Rocks HD
© 2013 Sprout Labs
This is a mashup of videos, photos and narrated blocks of text about US rocks and minerals. The design is mostly touch and hear, with quizzes. Topics include the rock cycle, minerals, soil types, weathering and erosion, formation of fossils, and various types of fossils.
$2.99, iPad
Teaches: earth science, geology
CTR Rating: 62%