Makes sense to me. We do math, phonics and reading everyday ( school days lol ) and then do the other subjects. I would like to say we get them all every day but somtimes it doesn't happen. So if we still had say history and writing left then the next day we do math , phonics, reading and then history and writing before science. That way in a week she at least gets some of everything and always the most important. We school year round too so we have plenty of time to cover it all