A．Because children could learn skills such as counting, reading from experience.B．Because children could learn something useful from direct experience.C．Because parents taught their children in the Three R’s .D．Because children taught one another in controlled groups.
A．Because children could learn skills such as counting, reading from experience.
B．Because children could learn something useful from direct experience.
C．Because parents taught their children in the "Three R’s".
D．Because children taught one another in controlled groups.