You are probably looking for an pre-set instruction book filled with clear directions detailing precisely what to do for pre-schoolers, but I would suggest leaving the structured things behind at least through the pre-school years. I think the best preparation for pre-school years is for the child to learn to explore things she is curious about, learn how and where to find more information about a subject, learn how to follow instructions and learn how to stay on task to completion even if it is difficult.
For example, take her on nature walks naming the plants you know and if you find plants she in interested in, help her do rubbings, or make pictures by glueing leaves on paper, or take photographs of the plants and help her look them up in nature books at the library or on the internet when she gets home. If you enjoy bird, animal or bug watching, you both can do that too.
Cooking with young children is another way to teach them a number of skills such as arithmetic, measurement, fractions, patience. With a pre-schooler, I would stay away from anything that required the child to use the stove.
Playing games can be very instructional. Hopscotch, for example, is a very good game for math.
Five in a Row (http://fiarhq.com/fiveinarow.info/index.html) is excellent for children’s literature with related activities to do with your granddaughter. The Before Five in a Row program may be something you are looking to use. We used the Five in a Row program and we enjoyed it.
I have known many homeschoolers who have used Abeka and have found it very useful, but I personally prefer more hands on type instruction especially for younger children.
“I personally prefer more hands on type instruction especially for younger children”
Your post was better than the one I was working on. My daughter learned the months of the year in an afternoon, singing and dancing to Paul Anka’s “Calendar Girl” song. Her early math was game playing, including Black Jack. I played that as a kid when on vacation with other kids my age and boy did I learn fast! Playing “Monopoly” with my cut throat, cheating sister also helped me. There are so many teaching/ learning activities in just day-to-day activities, and even in computer games. My daughter learned a lot of history from playing Age of Empires because she wanted to read about the civilizations to optimize game play. Frankly, textbooks are boring for young children. Plant the seed for a thirst for knowledge through life experience and they’ll seek out the books as they get older.