My own observations are for first graders you have a subset that really get money but are baffled by time, a subset that gets time but not money, a subset baffled by both and a subset that gets both.
My own son was a time wiz but just could not grasp money. I was homeschooling and we just moved on to other things and worked with change when out and about in realistic situations and played various math games based on money. I think a lightbulb just went off in second or third grade because I know it wasn't an issue in fourth.
Not sure hat is going on with classroom grades but my other son is PG 5th grade and his grades aren't perfect. I don't care anymore...we are just trying to get out of there and into middle school at this point.
