This is what we did for Bible with your youngest two when they were about 6 and 8:
AudioBible (we’re going through 2nd Samuel, using Suffer Little Children, Book Two by Gertrude Hoeksema)
Reviewing the Apostles- we sing a song to the tune of Jesus Loves Me:
Jesus called them one by one
Peter, Andrew, James, and John,
Next came Philip, Thomas, too, Matthew and Bartholomew.
Yes, Jesus called them,
Yes, Jesus called them,
Yes, Jesus called them
and they all followed him.
James, the son of Alpheus
Simon, also Thaddeus
The Twelfth apostle Judas made
Jesus was by him betrayed.
(actually, we skip the chorus and just go right into the second verse)
Review the Old Testament books and their divisions, singing them to the tune of The More We Get Together. That site is helpful because it has sheet music and a link to a midi file to the tune, though our words are a bit different than those printed at that site:
Let us sing the Books of Moses, of Moses, of Moses,
Let us sing the Books of Moses, for he wrote the Law.
First Genesis, then Exodus, Leviticus, and Numbers,
And the fifth is Deuteronomy, the last of them all.
Let us sing the Books of History, of History, of History
Let us sing the Books of History, there are twelve of them all.
There’s Joshua, Judges, the book of Ruth [book and Ruth get two notes in our version],
First and Second Samuel, and First and Second Kings
First and Second Chronicles,
they give us the records
Ezra, Nehemiah,and Esther the Queen.
Let us sing the Books of Poetry, of Poetry, of Poetry,
Let us sing the Books of Poetry, there are five of them all.
There’s Job, the Psalms of David [not altogether accurate, as there are other Psalmists in the book], and the Proverbs of a wise one.
Then Ecclesiastes, and the Song of Solomon.
Let us sing the Major Prophets, Major Prophets, Major Prophets
Let us sing the Major Prophets, there are five of them all.
Isaiah, Jeremiah, who wrote Lamentations,
Ezekiel and Daniel, who prayed no matter what.
Let us sing the Minor Prophets, Minor Prophets, Minor Prophets,
Let us sing the Minor Prophets, there are twelve of them all.
Hosea, Joel, Amos, Obadiah, Jonah, Micah,
[*we repeat the above melody line again] Nahum, Habakkuk, Zephaniah, and Haggai, Zechariah, Malachi end the Old Testament.
Memory verses- we use a much simplified version of this method. We don’t have numbered dividers. We work on one new verse every day until we have it (mainly we just read the new verse aloud two or three times, and eventually I read it, leaving out words for them to fill in). Older memory verses are written on index cards in a file box, and we review five old verses a day for a week. At the end of the week, I move the five we’ve been reviewing to the back of the box and we spend a week reviewing the next five.
1 John 4:7,8
We also spend some time reviewing some of the material from a program called Our Spiritual Heritage, which is used at our local congregation.