2 + 2 is 4!
If you thought counting to 20 or 30 was a big thing, get ready to be floored. This year, your child is going to come home adding.
First grade students learn that numbers aren't just for counting but are abstract concepts that can help them understand the world. No longer working only with "adding to" and "taking away from" groups of concrete objects, math starts to happen in their heads and apply to pretty much every subject area. Your child will be doing simple addition and subtraction, counting by twos and fives, and starting to develop an understanding that some numbers that are bigger than they can count, or even conceive.
And finally, a lesson you'll be experiencing a lot of (for better or worse) at home ...