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Math MarvelModel: Math Marvel
Battery: 9 volt

AC adapter:
Year: 1980

Chip:

Info:

 


 

math star Model: Math Star
Battery: 2 x AA
       
AC adapter:
Year: 1988
                              
Chip: CD4616

Info: The Math Star is preprogrammed to teach the basic four mathematic functions through different games. This educational toy was rated by Texas Instruments for childrens aged between 6 and 11 years.


 

mickey math adventureModel: Mickey Math adventure
Battery: CR2025

AC adapter:
Year: 1983

Chip:

Info: manufature China

 

 


 

Mickey MouseModel: Mickey Mouse
Battery: solar

AC adapter:
Year: 1983

Chip:

Info: manufature China


 

MR challengerModel: Mr Challenger
Battery: 9 volt

AC adapter:
Year: 1979

Chip:

Info: manufacture Italy