Has anyone additional info about this series of obscure educational titles for the FC?

Info are basically unavailable on the net. I was only able to find the Japanese title: 藤屋ファミカセシリーズ

and a few info and images at these pages

http://magweasel.com/2010/06/28/fujiya-thinking-games-v1-0/
http://www.geocities.jp/rinkaku89/pachigame/14_fc_fuji1.html

I find it amazing that there are still some FC items that remained almost uninvestigated after all these years :)