Bob has an unknown liquid and must determine what it is. he decides to systematically use a number of tests to determine the correct answer. according to piaget, bob has most likely reached the stage of cognitive development.

The Formal Stage

Explanation:

The Stages of cognitive development are as follows:

The Sensorimotor Stage, which is what babies go through, and consists of touchy-feely actions. The name comes from "Sensor" (feelings, nerves) and "Motor" or actions and movements.

The Preoperational Stage is when younger children begin to develop reading and writing skills, along with speech and recognization skills.

The Concrete Operational Stage is where kids start thinking more logically, instead of pretend situations. For example, a boy might understand a dog will play with him if he is calm and collected, instead of when he is rough and loud, thus scaring the dog away.

The Formal Operational Stage is when older kids start to make more logical conclusions through running tests and collecting data in a organbized way. This is when the child begins thinking like an adult.

Based on the information given, Bob best fits the 4th stage, Formal, because he chooses to do systematic tests to find what the liquid is.

terms in this set (38) portuguese explorer. in 1497-1498 he led the first naval expedition from europe to sail to india, opening an important commercial sea route.(sailed around africa to india).portuguese navigator who sailed around the cape of good hope and reached the west coast of india in search of spices.

the minoans were group of people living in the greek islands of crete in the mediterranean sea during the bronze age