I have one first grader, and 5 preschoolers (2 of my own, 3 in my home daycare).
We do about 20-30 minutes in the morning with everyone. This includes a song, a short devotional, scripture memory practice, a poem or two, and an Early Years type story (Winnie the Pooh and Thornton Burgess books are what we are currently doing.) We sometime extend this a bit with more stories and preschool type songs if the children are interested.
Then we do either some Science (from 106 Days) or Spanish, which takes between 10-30 minutes, depending on the activity. Once a week we do a quick picture study. We listen to composers or Suzuki violin songs during meals and snacks. The rest of the morning is usually spent in the backyard or at the playground or having friends over for a playdate.
Right after lunch, when some of the littles are sleeping, my DD6 and I do about 45 -60 minutes. This includes two read alouds with narrations (literature everyday, plus history 2 days, science living book 1 day, geography 1 day), math, and copywork. We do this 4 afternoons a week. The fifth day we do a 'wild day' for nature study or go on a field trip.
We also do a bedtime read aloud, sometimes literature, sometimes a fun history book that goes with our current topic. This is usually only 10-15 minutes. Then DD reads in bed for about 30 minutes, just free reading.
Finally, DD does about 15 minutes of violin practice on most days, whenever we can fit it in.
I also have great intentions of doing a planned P.E. activity for 30 minutes, but somehow this is the area that gets skipped more often than not. Fortunately I have active kids who spend a lot of time outdoors running around, but I want to get better at activities to teach skills like throwing and catching a ball, etc.