Much of what most of us learned as children about the first Thanksgiving Day in what became the United States was wrong. And it seems that some of what some children are being taught today is also wrong.
It was true, of course, that a day of thanksgiving was held in November 1621 by the surviving band of "Pilgrims" and others who had come to the "New World" the previous year. But some argue that the first Thanksgiving was actually celebrated in St. Augustine, Florida, on September 8, 1565. And others say that the First Nations (I like the Canadian term better than Indians or even Native Americans) observed harvest festivals and times of thanksgiving long before Europeans came to this part of the world.
Then, many seem to think that most of the people who came across the Atlantic Ocean on the Mayflower did so because of their desire for religious freedom. Actually, fewer than half of those on the Mayflower were religious "pilgrims," as William Bradford called them; the others came for economic or other reasons. And even the Pilgrims had religious freedom in the Netherlands before they left there, so it seems that their main reason for making the dangerous voyage was not for religious freedom as such.
And then there are the Native Americans. The assistance and generosity of the Indians to the Plymouth settlers have generally been recognized, and those like Squanto, a Patuxet, have been highly regarded. But what has not usually been taught is that Squanto, along with many others, had been captured as slaves. Squanto was able to help the Plymouth colony partly because he learned English in the Old World where he had been taken as a slave.
Further, little recognition has been given to the fact that a large percentage of the Native Americans in "New England" had already died before 1621 from diseases (mostly smallpox) brought by the Europeans who had come in the previous decade. When the Mayflower landed on Plymouth Rock in 1620, all the Patuxet living in the area had already died from such illnesses.
To counter the numerous Thanksgiving Day myths, errors, and half-truths that have usually been taught in the schools, some have developed alternative curriculum materials. But, unfortunately, the ones I found on the Internet also seem, unfortunately, to contain errors and misleading statements. Combating errors with errors is not helpful. In this case, as in all others, we need to seek to learn and to live by the truth. And that is hard to do.