I am a teacher and I have taught preschool (now, I am teaching 1st grade). Anyways, In preschool socialization is very important. It is about teaching them manners, to share, take turns, serve themselves pouring into a cup, playdough for fine motor skills, writing their name, letters, numbers, shapes and colors are important as well as coloring in the lines and being creative--give your child different items paper, glue stick, tissue paper, anything and let them create--cookie cutter crafts are no longer used unless learning is attached with it--For preschool you could do shapes--make a polor bear with all circles, etc. Then you ask--where should the eyes go, ears, etc--but let them make it. tracing and cutting are very important....Pre-school is all about learning through play. Watch them play and talk to them about what they are doing--say wow that is neat, what are you making?--if they say a building say is your building tall or short. Get them using vocabulary. Listening , raising their hand, reading stories and talking about them are important as well...If you are homeschooling make sure you take him/her somewhere to interact with children--this is VERY IMPORTANT. Many students enter Kindergarten and lack social skills. They need to learn how to share and take turns to function in society. Feel free to e-mail me with any other questions you may have about teaching. I love my job and I love to help other teachers. Finger plays also have learning attached to them.
P.s don't forget to teach fire safety, 911, what to do if your clothes catch fire, etc. And be sure to go on field trips such as the fire station, an animal farm and a place where they make something like orange juice, taffy, chocolate, etc.