Final answer:
Piaget asked children to arrange sticks of different lengths from shortest to longest to test for conservation.
Step-by-step explanation:
Piaget asked children to arrange sticks of different lengths from shortest to longest to test for conservation. Conservation is the understanding that the mass, volume, and number of an object remain the same even when its shape or arrangement changes. In this experiment, children are asked to order the sticks based on their length, demonstrating their understanding of the concept of conservation.