Apps by Jean Jacques Greif

Mad Cat 1.4

PAID
An iPad app to help young children understand how letters combine into words. It features one hundred three-letter words, like cat and dog, with pictures that provide some fun when you tap them. You move from one word to another by changing a...

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Madphone Lights 1.5.1

PAID
In this puzzle or brainteaser, you are supposed to turn off the lights of houses with a growing number of windows : 4, 9, 16, 25, etc. There are six houses, or six levels. Turning a light on or off turns some other lights on or off, according to a...

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Mad 123 1.1

PAID
Mad 123 is an app for young children who are beginning to distinguish numbers from 1 to 9 and are ready to count and add on their fingers. Each of the nine digits has its own illustrated and animated page. Screenshots #2 and #3 show what happens on...

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Mad ABC 1.0

PAID
Mad ABC is an app for young children who are beginning to distinguish letters. Under a picture of a bat, the letters b, a and t appear in gray. Just below, there is a choice of six blue letters, three of which are b, a and t. When the child taps on...

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Mad Logo 1.5

PAID
This is an iPad introduction to the Logo programming language for children, created by Seymour Papert at MIT in the seventies. It features a turtle that draws geometrical pictures on the screen according to a clever and special turtle geometry. While...

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Madphone Cat 1.5

PAID
An app to help young children understand how letters combine into words. It features one hundred three-letter words, like cat and dog, with pictures that provide some fun when you touch/tap them. You move from one word to another by changing a single...

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Madphone Cards 1.5

FREE
Three vintage solitaire games. The second one is very easy and suitable for very young children. To play the two others, you need to add and subtract card values, so they may help you improve your mental calculation skills. The third one succeeds...

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