"Value-added" teaching, which raises students' standardized achievement test scores, also raises their lifetime income and lowers the
a. risk of teenage pregnancy.
b. risk of mental health problems.
c. rate of unemployment.
d. rate of aggression in adolescents and young adults.
a
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In one elementary school curriculum, mathematical variables first appear in the sixth grade. According to Piaget, they are not introduced in the fifth grade because:
A) Preoperational children cannot reason with post conventional thinking B) children in the concrete operational stage cannot reason with hypothetical entities C) children are in capable of understanding the concept of conservation and reversibility until the beginning of the formal operational period D) Preoperational children lacks The capability of symbolic thinking
The first two weeks of a pregnancy, from conception to implantation, are termed the ________ period
a) embryonic b) germinal c) fetal d) critical