My 6 year old woke for the day at 3 a.m. He was a bubbly, cheerful, active child until we had to sit still to start his homeschooling at 8. Then, he became a total grouch! Finally, after doing 2 worksheets and some math work, his brain could take no more. We were covering place value and he "couldn't" even count! He started crying and said, "I can't even count these, mom. This worksheet is too hard!". I knew the worksheet wasn't over his head. I told him we will finish the rest of the school work after he takes a nap. Hopefully, he will awaken with a new attitude.