4 mo
thumb sucking
8 mo
functional play: repetitive, toy banging, dumping toys, toys to mouth.
12 mos
symbolic play (e.g. block = truck)
2 yrs
Pretend/imaginative play. Plays w/ dolls, house. Short play sequences.
3 yrs
pretend play with long sequences
4 yrs
act out scenes with dolls, puppets.
5 yrs
Plan a sequence of pretend events. Highly imaginative and cooperative. Competitive games with rules.