Charlotte Mason's Original Home Schooling Series
6 volume set, reference work for adults.
Living books instead of textbooks for teaching. "Narration" or retelling what one has read, rather than fill-in-the-blanks workbooks. Short lessons of 10 to 30 minutes, leaving time for handicrafts and exploration in the afternoon. Plenty of time outside in God's creation, learning to draw and identify plants and animals. If you are using any of these ideas in your homeschool, you may owe a debt of gratitude to Charlotte Mason.