Which of the following is the best sequence to teach the topic, ‘Measurement of Length” at primary stage?

Correct option is B

The best sequence for teaching "Measurement of Length" at the primary stage follows a logical progression from familiar and concrete experiences to more abstract and standardized concepts. At the primary level, students are introduced to the concept of measurement starting with comparisons (such as longer/shorter), followed by using non-standard units (such as hand spans or sticks), then moving to the development of standard units (such as centimeters or inches), and finally using standard measurement tools (like rulers).
Thus, the correct sequence is:
1. Comparison: Students begin by comparing objects directly to understand relative length (e.g., "Which is longer or shorter?").
2. Using non-standard measures: Students use informal methods like hand spans, foot lengths, or strings to measure lengths.
3. Developing standard units: After understanding the limitations of non-standard units, students are introduced to the idea of standard units such as meters and centimeters.
4. Using standard measures: Finally, students learn to use tools like rulers and measuring tapes with standard units for accurate measurement.
Hence, the correct answer is (b) Comparison → using non-standard measures → developing standard unit → using standard measures.
Information Booster:
1. Comparison helps children grasp basic concepts of length by observing relative size without using tools.
2. Non-standard measures provide a hands-on, intuitive introduction to measurement, using familiar objects.
3. Developing standard units teaches the need for uniformity and precision in measurement across different contexts.
4. Standard measures ensure accuracy and consistency, and students learn to apply these using proper tools like rulers and tapes.
5. Teaching measurement in this progressive manner allows students to build their understanding step-by-step, making abstract concepts easier to grasp.
Additional Information:
· Non-standard measures involve the use of arbitrary units like paperclips or hands, which are accessible but imprecise.
· Standard units are based on internationally accepted measures such as the metric system (meters, centimeters).
· Comparison and estimation are essential foundational skills before moving into formal measurement techniques.