Michiko Kite

Michiko Kite (木手 みちこ) is Kiteretsu's mother. She is very concerned about his son and at times does not like him inventing things. She always want Kiteretsu to study well and get excellent marks but he doesn't know that his mother performed very badly in her academics when she was of his age as we come to know in one of the episodes. 

Could be the one from the perman series but considering the bad marks it shouldn't.