A Nine-Year-Old Who Is Unable to Multiply and Divide Is

question 26

Short Answer

A nine-year-old who is unable to multiply and divide is delayed in reaching Piaget's ____.

---

Definitions:

Simplest Alkene

Ethylene, also known as ethene, the simplest alkene consisting of a carbon-carbon double bond and the chemical formula C2H4.

Carbon Atoms

The basic building blocks of most of the molecules that form living organisms and the materials derived from them.

Alkene

A hydrocarbon that contains at least one carbon-carbon double bond, characterized by the 'ene' suffix.

Carbon Atom

The chemical element with symbol C and atomic number 6, essential to all known life and the basis for organic chemistry.