$3.99, iPhone, iPad, Android, Kindle

Teaches: logic, memory, spatial relations, math

$2.99, iPad, iPhone, Android

Teaches: fine motor skills, math, counting up to four, 1 to 1 correspondence, airports, planes

$2.99, iPad, iPhone, iPod Touch (iOS 8.0 or later)

Teaches: matching, reading, math, logic, counting

$2.99, iPad, iPhone, iPod Touch

Teaches: music, rhythm, melody, math, counting, computer sequencing

$50, Wii U

Teaches: socialization, timing, logic, math

$11.99, iPad, iPhone

Teaches: math, math facts, numbers, math equations

$2.99, iPad, iPhone, Android (124 MB)

Teaches: spatial relations, logic, math, geometry

$100, LeapPad

Teaches: math, reading

$1.99, iPad, iPhone, iPod Touch (iOS 7.0 or later)

Teaches: science, math, reading, space, solar system, rhyming words, classification, math facts, addition, matching

$60, Xbox One, Xbox 360, PlayStation 4, PlayStation 3, Vita, Wii U, Nintendo 3DS

Teaches: logic, co-op play, math, reasoning

$0.99, iPad, iPhone, iPod Touch (iOS 7.0 or later)

Teaches: math, reading, logic, insects

$150, LeapPad, LeapPad Ultra

Teaches: basic skills mostly related to math and reading

Windows, Mac OSX

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

$2.99, iPad, iPhone

Teaches: music, math, patterns

$100, LeapPad

Teaches: readiness skills, math, reading, art, photography

$70, Smart Toy, Leapster

Teaches: school subjects, reading, math, language arts