Which of the following is most appropriate to introduce the concept of ‘measurement’ to primary grade learners ?

Correct option is C

The answer is (c) Plan activities that involve measuring real-life objects using non-standard techniques.
Introducing the concept of measurement to primary grade learners requires a hands-on, exploratory approach that emphasizes real-world experiences. Using non-standard measurement techniques, such as using paperclips, straws, or their own hands, allows children to develop a concrete understanding of the concept of measurement before being introduced to formal units and standardized tools.
Option (a), focusing on accuracy and precision, is more appropriate for older students who have already grasped the basic concept of measurement. Option (b), simply providing definitions of units, lacks the experiential aspect that is crucial for young learners. Option (d), asking children to measure shapes using a scale, introduces a formal tool too early, potentially hindering their development of a conceptual understanding.