Here's a guideline I've been following to a certain extent, before I even found it on the www.triviumpursuit.com website. It's part of an article by Harvey and Laurie Bluedorn, which was then expanded into their book, Teaching the Trivium.

Ten things to do with Children before age 10
1. Reading & Writing	Intensive Phonics; Copywork; start English Language Notebook
2. Oral Narration	Daily
3. Memorization	Bible; poetry; passages of literature; Greek and/or Hebrew alphabet
4. Hearing & Listening	Read aloud 2 hours per day from a variety of fiction and nonfiction; start History Notebook; timeline
5. Family Worship	Family Bible study morning and evening using grammar level questions
6. Arts & Crafts	Provide the time, space, and materials; develop creativity
7. Field Trips & Library	Start learning elementary library research; investigate the world
8. Work & Service	Schedule for chores; visit nursing home, etc.
9. Discipline	First-time obedience
10. Play & Exploration	Develop the imagination