I have no idea. But my plan is to keep them together for science, history,art, music, bible, and sign language. They have much different math, spelling, grammar, and writing levels. Their writing assignments will be similar (mostly from history and science, and some art and music), but higher expectations for my older one. One will do something independently while I teach the other math, then they'll switch...same for spelling and grammar. At least that's the plan. Lol
We did loosely last year, and will loosely again this year. I have a prek and 3rd grader. Then of course there is the baby. :) I try to consolidate the lessons and make them work together so I don't have a bunch of completely different things to teach.
I use the Beck method of vocabulary so that I can even combine literature for all of my elementary kids. Since I then have to use quality books, they work for all of my elementary kids.
I use a mailbox and write letters back and forth to my oldest. That way I can spend the time talking with my youngest 2 about what we are covering while the oldest is writing me a letter. Oldest is learning to answer questions in full sentences, writing in paragraphs, letter format, and it's FUN!
Covering the same topics in Science and history are wild because you realize that the younger ones understand much more than you would think.
Having the kids "teach" or work on flashcards or read to the younder ones gives them a bump in self-confidence, and gives you a needed break to grade a paper or respond to a letter.
I don't. My kids are close enough in age. I am teaching at the lowest common denominator and progressing from there. Sure, my son will likely be a bit bored for the next few months - but I think it will be okay - we'll see.
My kids are 3 and 1 year apart (so this year I'll have a 1st grader, 2nd grader, and 5th grader).
We do Sonlight core - so they all do the same stuff for read-alouds, history, and geography. At least until this year... this year I am having the 5th grader do a different core because I feel it's too advanced for the 1st and 2nd graders - those two will be doing core B+C combined. We've covered SOME of it before when the oldest was on that core, but it's always fine to revisit things!
Then they have their own grade level math, reading, etc.
We do workboxes so how we normally do it, we start the day with individual work (after calendar and anything we're memorizing at the moment). That's in their workboxes. They have workbooks, manipulatives, art projects, assignments to read or do (like 'practice piano'), in their workboxes. When those are all done we take a break, and then we do whatever we're doing all together. Like last year we were doing Lewis & Clark so after our mid-morning break, they'd grab a snack and their notebooks and I'd read a chapter aloud to them from a book, then we'd watch a segment of the L&C documentary on PBS. We also do read-alouds at bedtime sometimes.
We do worksheets. They basically work on the same things, just different levels. Like a time worksheet, the younger set tell half-hour, the medium set tell 15-5 minutes, and the older set tell minutes.
An editing worksheet, the younger set would worry about puncuation, the medium set would worry about puncuation and capitalization, and the older set would worry about those two, plus spelling.