What is the most appropriate cognitive skill that help students to recognize and group shapes according to their attributes and properties ?

The correct answer is Classification.

Explanation:

Classification is the cognitive skill that involves sorting, organizing, or grouping objects into categories based on shared attributes, features, or properties (such as shape, size, color, or number of sides). In geometry and early mathematical development, recognizing and grouping geometric figures based on their defining properties is a fundamental application of classification.

Let's look at why the other options are not the primary skills for this specific task:

• Conservation: The understanding that a quantity, mass, or volume remains constant despite changes in the shape or visual appearance of its container or arrangement.

• Decomposition: The process of breaking down a complex shape, number, or structure into smaller, simpler parts.

• Seriation: The ability to arrange items in a logical order along a quantitative dimension, such as ordering objects from smallest to largest or shortest to longest.

Therefore, grouping shapes according to their attributes and properties is best described as Classification.