I've recently found some PNEU schedules for what Charlotte Mason called the Preparatory Level.
Here is a sample schedule that she included:
Monday: Bible, Reading, Painting, Number, Handwork, Geography, Writing
Tuesday: Tales, Number, Handwork, Reading, Singing Games, Writing, Nature Study
Wednesday: Poetry, Reading, Nature Study, Number, Handwork, History, Writing
Thursday: Bible, Number, Handwork, Reading, Singing Games, Writing, Tales
Friday: Tales, Reading, Picture Study, Number, Handwork, Nature Study, Writing
Notice how she intersperses skill work with content work keeping the child from becoming overwhelmed or frustrated. A short period of concentrated work such as Numbers, Writing, etc. should be followed with a different type of work such as Handwork, listening to stories, singing, etc. This schedule should be followed with time allotted for outdoor play, nature study, gardening, etc.
Some books that might be used for Tales included:
English Fairy Tales by J. Jacobs
Winnie the Pooh and The House at Pooh Corner by A. A Milne
Fairy Tales of Long Ago edited by M. C. Carey
Anatole by Eve Titus
The New Pet by Marjorie Flack
The Fairy Caravan by Beatrix Potter
Here is a link to one of several books used for history:
A Nursery History of England by Elizabeth O'Neill
Days before History by E. G. Hume and Stories of Great People, Stories of Great Deeds by K. Conyngham Greene were also used.
These books were used for biographies, particularly Alfred the Great and Sir Walter Raleigh.
Here are just a few of the many selections used for natural history. Many of these books are not available for free downloads, but are available for purchase.
Tales of the Wild Folk by Cicely M. Rutley
In the Wilderness by Derek McCulloch
Walnut Tree Meadow by David Severn
Zoo Days by H. Golding
Seeing the books that CM used helps me to have a better understanding of which books I can use today as replacements. I often can get a better sense of her fundamental goals by looking at her books just as well as reading her theories and methods.
CM also included poetry, picture study, Bible, geography and singing along with a great emphasis on physical exercise and outdoor time.