In One Elementary School Curriculum, Mathematical Variables First Appear in the Sixth

question 95

Multiple Choice

In one elementary school curriculum, mathematical variables first appear in the sixth grade. Why are they not introduced in the fourth or fifth grade

• A)Children in the concrete operational stage cannot reason with hypothetical entities such as variables.
• B)According to Piaget, concrete operational children should be able to reason with variables.
• C)Children are incapable of conservation and reversibility until the beginning of the formal operational period.
• D)Dealing with variables requires post-conventional thought, which does not usually appear until adolescence.

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Definitions:

Diffusion

The process by which an innovation is communicated through certain channels over time among members of a social system.

Control

In experimental research, the standard by which test results are compared, often a group that does not receive the experimental treatment.

Within-subject Design

A research design where the same participants are subjected to each condition of an experiment, allowing comparison of their performance across conditions.

Experimental Condition

In research, this is the set of conditions applied to subjects that is manipulated by the researcher to observe its effects compared to a control condition.