Polymer clays or plasticine clays are made of synthetic plastics and require âcuringâ or low heat to harden. They stay moldable for a very long time if stored properly in a plastic or metal box (no paper or fabric that would absorb the moisture). Polymer clays are usually very smooth and have a silky feeling.
On average, 4th graders are 9-10 years old because that is the normal age for the grade. But kids could potentially be anywhere from about 8 to 11 years old, since some kids hâ¦ave to repeat a year in school and get behind, and then some kids are a year ahead or have late birthdays before the cut-off date.
Our son is 9, almost 10, and finishing 4th grade at our local public school. His MAP test scores were 240 in reading and 255 in math in the spring (99th percentile for both). I'm having trouble interpreting those scores a bit and knowing what they mean in terms of grade-level ability. math RIT of 255 is not only 99th for Spring 4th grade, but is 98th for Spring 5th grade and 96th for Spring 6th grade. With those numbers, he definintely should have access to 6th grade curriculum and possbily 7th grade (pre-algebra) in the fall. Again, a lot of it depends on your local situation.