Everything you need to understand or teach When It Changed by Joanna Russ.
The central event of "When It Changed" is the arrival on the planet Whileaway of a space vehicle full of men. Whileaway had been colonized by men and women from Earth, but all the men had died of a mysterious plague some 600 years before the story begins.
The women have devised technologies of survival — both for reproduction by the merging of ova and for conducting the heavy labor...