$2.99, iPad

6-up

Teaches: social studies, buildings, science, physical science, urban planning, skyscrapers, architecture

$2.99, iPad, iPhone, iPod Touch (iOS 7.0 or later)

8-up

Teaches: science, geology, geography, earth science

$2.99, iPad, Android, iPhone

5-9

Teaches: science, creativity, logic, spatial relations, ecology, ecosystems, earth science

$80, iPad 2 or later (with camera), iPad Mini

3-up

Teaches: spatial learning, logic, art, science, socialization, large group, huddle

$1.99, iPad (24 MB)

6-12

Teaches: science, ants, insects, reading

$2.99, iPad, iPhone

4-up

Teaches: science, human anatomy, biology, health