H and G love to read which is great, but sometimes it can be hard to know what books are good for them to read, since I can't keep up with them. Here are some Christian Fiction series that we have found for them to read:
Young Cousins Mysteries, series by Elspeth Campbell Murphy. Fun mysteries with an emphasis on godly character traits. Very early chapter books, age 4-7.
The Three Cousins Detective Club, also by Elspeth Murphy. Similar to, but are longer than the above series, but still early reader chapter books. Age 5-8.
The Ruby Slippers School series by Stacy Towle Morgan is about 2 homeschooled girls who travel to different countries with their dad who is a missionary. They encounter a mystery in each book. My daughter H loved these books because the main character is homeschooled! :-) Age 6 and up. I believe there are 6 books.
The Elizabeth Gail series by Hilda Stahl. About a young foster girl who is adopted by Christian parents and becomes a Christian. I read these books when I was younger and loved them, and my daughter loves them too. (H is 7 now). My only caveat--Elizabeth Gail does age in this series, so she does encounter love in the later books. So the first several books are fine for age 7 and up, but the later books you might want to wait. I think there are about 21 books.
The Spirit Flyer series by John Bibee (age 9 and up, I would think--my husband and I read these) Great Christian spiritual imagery, about a special bike that can fly. Along the series, the kids' eyes are opened to the spiritual realm and unseen battles that are being fought. There are 8 books, good for boys and girls.
The Mandie series by Lois Leppard--my daughter is about to start this series, and now they have movies out for the first two books, which our family has enjoyed watching together for family movie nights. I'm not sure how many books there are, but at least 40. Probably age 8-12.
And of course the Laura Ingalls Wilder books are great, and everyone knows about those, right? :-) But did you know about the Little House Chapter Books for earlier readers? These are books with shorter stories and chapters that introduce Laura and Mary in their earlier years. Age 4-7.