An object designed so that a learner can perceive a mathematical concept by manipulating it is called:

• A. Manipulatives
• B. Geoboard
• C. Net
• D. Ruler

Answer: (A)

Using hands-on, physical objects to explore mathematical ideas helps learners perceive abstract concepts by moving and manipulating concrete models. Objects designed for this purpose are called manipulatives. They let students explore numbers, operations, geometry, and measurement in a tangible way, making ideas easier to understand and reason about. A geoboard is a specific tool used to study geometry with rubber bands, so it fits under the broader concept of manipulatives but isn’t the general term itself. A net is a two-dimensional layout used to visualize how a three-dimensional shape folds, not a general manipulatives concept. A ruler is a measuring instrument, not a category of tools for exploring math ideas through manipulation.