Here are just a few things I pulled from Michigan's third grade standards:
E2.0.1 - Using a Michigan example, describe how specialization leads to increased interdependence.
P3.1.3 - Give examples of how conflicts over core democratic values lead people to differ on resolutions to a public policy issue in Michigan.
S.RS.E.1 Reflecting on knowledge is the application of scientific knowledge to new and different situations. Reflecting on knowledge requires careful analysis of evidence that guides decision-making and the application of science throughout history and within society.
S.IP.E.1 Inquiry involves generating questions, conducting investigations, and developing solutions to problems through reasoning and observation.
R.CM.03.03 compare and contrast relationships among characters, events, and key ideas within and across texts to create a deeper understanding; including a narrative to an informational text, a literature selection to a subject area text, and an historical event to a current event.
R.NT.03.04 explain how authors use literary devices including prediction, personification, and point of view to develop a story level theme, depict the setting, and reveal how thoughts and actions convey important character traits.
Food for thought: I'd say around half of my students still believe in the Easter Bunny.
Brain development--those who write state standards might want to take a course.