Between ages of 6 and 12,
A) liagments become firmly attached to bones.
B) the bones of the body shorten and narrow.
C) all 20 primary teeth are lost and replaced by permanent ones.
D) primary teeth are gradually lost, starting with the molars.
Answer: C
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One of the most telling indicators of success in education is the relationship between educational achievement and socioeconomic status
Indicate whether the statement is true or false.
Binet and Simon originally developed the concept of "mental age" as a criterion for helping them distinguish
a. children with high IQs from children with low IQs b. children who would be able to learn in school from those who needed special instruction. c. white children from black children. d. economically disadvantaged children from the "select few" who previously attended school.