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

question 179

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) I'm not sure. 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 postconventional thought, which does not usually appear till adolescence.

---

Definitions:

Capital Gain Yield

The appreciation in the price of an investment, expressed as a percentage of the initial investment cost.

Total Rate Of Return

The overall return on an investment, including both capital gains and income, expressed as a percentage of the initial investment.

Capital Gain Yield

The increase in the price of an investment, calculated as the percentage difference between the current price and the purchase price.

Rate Of Total Return

A measure of the overall return on an investment, including both capital gains and income, expressed as a percentage of the initial investment.