Shalom Rachel! Our subjects are:
Hebrew, Jewish Lit., Jewish History/Bios, Torah/remaining Tanakh/Brit Hadashah study, Holidays, Jewish culture/lifestyle, Israel and Media. Since it's our lifestyle and not just extra subjects, I try to make them flow with the rest of the subjects/life.
Hebrew: M-F at home and one Sat. a month at shul for Bnei Mitzvah(BM) training.
I try to make it one our first subjects. My son helps me out w/his younger sister if I am unavailable.
My son is getting ready to start a conversational weekly or biweekly on Skype w/an Israeli Ulpan (Hebrew school) teacher to give him more immersion and conversational practice. We can fit that in when we want to according to our schedule.
Jewish Lit.- 1x a week
currently that consists of Fairy Tales, Folk Tales and Legends. I read aloud, usually Fri. or Sun., but when I can. They have also been know to grab a book and read on their own, too.
Jewish History: 1x a week.
I time this alongside secular/church history.
Family- Read Aloud. Last year, I read Seymour Rossel's two comprehensive, children's books on Jewish history for overview. Currently, I'm reading a bio on Maimonides.
We add in the info. into our BOC.
Independently- In their extra, leisure reading list for the year, I include living Jewish history books that correlate with our current time period(s).
Torah/Bible/New Covenant(NC) study: Daily.
I've done this differently each year for in-depth study and then there's the Parshiot. It is the first thing we do in the morning, usually while they are eating breakfast. I'll give examples to share my meaning:
When they were 7/8, they completed a year of Children's Torah Club from First Fruits of Zion in addition to reading aloud from the Bible.
Last year, we read directly from the parshiot, including the parsha from the NC. There's no children's Hebrew/Messianic Bible study that I can afford, so I teach from my own studying and use both traditional and messianic commentary so we dig in deeply that way.
This past year, I decided to use the Greenleaf Guide History of the Old Testament w/the NC readings added in from the parsha that week. I read aloud commentaries from Rabbi's on the parsha from that week and of course, it's read on Shabbat.
They also have their own daily personal Bible time from the Complete Jewish Bible; a daily Proverb, something from the rest of the Tanakh and from a NC book. I have a deeper study on the Prophets for children from Berhman House to start later this “school year” on Fridays.
They also get study materials for their BM Class; it's done without me, but with each other, daily right after breakfast.
I wish I had known about the Artscroll Children's Parsha Readers when they were younger, I would've used that daily up to the FFOZ Torah Club. When we're finished w/the Greenleaf Guide, I plan on using the Messianic materials from Restoration Torah children's study materials - daily during breakfast and I'm also looking at some other Torah, Early Later Prophets and Writings studies. With a strong foundation in the Tanakh, the NC is more easily understood. Again, first thing in the morning these are done.
Holidays: As needed.
These I read something about them usually starting the day before and/the day of, depending on what Holiday we're at and it gets read in the morning, after Bible studies.
When they were ages 6-8, they did the Berhman House holiday materials that came in the packet 1x week and I read aloud from Walk with Y'shua through the Jewish Year as the holidays came. For the past two years, I have used The Book of Jewish Holidays.
Special note**
For Yom Hashoah, I've always read a book specific to teaching about the Holocaust up till the Day of memorial. They also read books on their own about this topic.
For Yom HaAtzmaut and Yom Yerushalayim, we make special effort to read any books in the same way as we do for Yom HaShoah; plus practice observance through prayers and music at home, in addition to shul services. I fit them in daily till the holiday/memorial day arrives, setting aside whatever is not as important in the schedule for that time.
For Hanukkah, we read our many books on the topic and my children read independently, too. These are usually done in the evenings, during the Feast.
I like the books by Yaakov Strauss for my children's ages for Pesach, Shavuot and Yom Kippur. There are so many wonderful children's books for your little one's ages, too to be read up to, and during, the Holidays.
They read on their own in this area, too.
Jewish Culture and Lifestyle: Independently- This is done 1x a week, usually Fri. morning. I usually schedule 3 books in a year.
I've used the Berman House materials since they were 6 and have been pleased for the most part, except for the Reform positions we do not agree with, like women wearing tallitot and kippot, being Rabbis or Social Justice teachings. Example for this year:
Journey of a Lifetime: The Jewish Lifecycle Book
Kid's Mensch Handbook: Step by Step to a Lifetime of Jewish Values
Israel: Done 1x a week, usually Fri., in it's order in the schedule; again, Behrman House has great materials for learning about Israel from grades K and up. I am planning on getting a map of Israel to hang up alongside our US and World maps.
Independently. This is so incredibly important to us: to nurture and defend Zionism and have a deep connection to and interest in The Land. Again, I've used Behrman House materials every year. My children also watch the Prime Minister's interviews and speeches; they also hear me read aloud articles that are relevant. As a family, we keep on top of the news. We get the International Jerusalem Post and I read from the online version, too.
Media: Lots of music (daily); movies and documentaries as their ages permit.
When they were younger, Bible videos, Shalom Sesame and the Itche Kadoozy Show on the Chabad website for the parsha- 1x a week.
This is probably more than you wanted or needed, but I didn't know how else to describe it. It looks on paper like it's very overwhelming, but it's not in practice. It's integral to our lives. Your children's ages are great for using the many picture books available. Looking forward to others contributions.
One in Yeshua,
Rachel
if I had proof read I would have caught it 
