How does the man with red eyes try to control the children's minds

The man tempts them with the idea that they should give into him so that he could take away all their “burdens of thought and decision.” He begins boring into their minds, reciting the multiplication table. Charles Wallace fights the man’s power by yelling out nursery rhymes and Meg and Calvin follow; Calvin yells out Abraham Lincoln’s “Gettysburg Address” and Meg simply yelling out “Father!” The man laughs at them for their attempt to break his hold on their minds and says that they passed his tests with flying colors.