$1.99, iPad

Teaches: science, poop

$1.99

Teaches: science, birds, biology

$1.99, iPad, iPhone

Teaches: natural science, eggs, mammals, reptiles

$2.99

Teaches: science, dinosaurs

Windows, Mac OSX, Chrome, Internet Site

Teaches: science, food safety, food borne illness protection

$2.99

Teaches: science, materials, states of matter, solid, liquid, gas

Windows, Mac OSX, Chrome

Teaches: programming, debugging, logic, math, science, STEM

$2.99, iPad

Teaches: science, oceanography, reef life, fish, biology, ecosystems

$2.99, iPad

Teaches: science, biology, mammals, food, digestion, medicine, health

$2.99, iPad

Teaches: science, astronomy, space, solar system

$2.99, iPad

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

$2.99, iPad, iPhone

Teaches: science, weather, meteorology, tornado, hurricane

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

Teaches: science, geology, geography, earth science

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

Teaches: physics, physical science, reading

$2.99, iPad, iPhone

Teaches: science, human anatomy, biology, health

Windows, Mac OSX

Teaches: programming, debugging, logic, math, science, STEM

$4.99, iPad

Teaches: science, light, angles, Thomas Edison, physics