I waited over 2 hours to vote. This was at an elementary school. Along the walls were student work from grade K and first grade.
Grade K materials included 3 sentences per student. These were as many as 7 words per student.
I am 5 years old. My favorite color is green. My favorite food is chicken.
This is 78 characters.
These were the types of posters. Many were error free. Some had errors of capitalization or of agreement of verb with number of subject. One error was
My favorite foods are donuts.
First grade materials involved a drawing of Ben Franklin with the kite and lightening. This was first grade. Some drew the lightening hitting the kite. They put on an actual string to be the kite string. There was a cutout of a key they pasted in.
Some were confused on what the lightening did after hitting the kite. Only one had it come along the string. Others had no particular drawing along that part. One had the string going back and forth and the lightening path through the string but not hitting the kite, just coming from the kite without the kite being hit.
These posters had a sentence: How Franklin stole the lightening. They used variable capitalization in it. They may have been told to make the letters the same height but use capitals or lower case freely.
There was an open computer pod area with signs not to use email before age 13 and to stay away from social media including Youtube and Facebook.
The K classrooms had letters up, but not any math that I saw. There was one classroom with 1 to 10 but that might have been preschool or some special work one.
The first grade classrooms also had the alphabet up. Both upper and lower case.
Overall, the complexity of the sentences they were making even at grade K was sufficient for them to also learn the additive identities for addition. Somehow, I think that this was my conclusion will not surprise anyone.