9 Measurements Lessonplan Hema
Table of Contents

June
Measurements
Instructional objectives
 Need for measurements.
 Differentiate basic physical quantities and Derived physical quantities
 Need for expressing physical quantities with their respective units.
 Concept of least count.
 Vectors and scalar quantities.
 Meaning of prefixes like kilo, centi, milli, micro, nano
 Use of slide calipers and screw gauge for measurement.(lab activities)
Teaching process
 Talk about need for measurement. How do you quantify various physical quantities and need for units of measurement.
 Need for accuracy of measurements and introduce least count.
 Students to be given different instruments to find least counts of the same.
 Physical quantities to be differentiated as fundamental and derived. Appreciate significance of derived physical quantities
 To introduce vector and scalar quantities and elaborate on the significance of both magnitude and direction.
 Talk about limitations of basic instruments (like a scale) and importance of accuracy.
 Introduce Slide calipers and screw gauge.
 Students to calculate the least count of the above .
 To enable students to use the above to find diameter(both external and internal) of a wire, pipe etc.
++Assignments
 worksheets to be provided to solve numerical problems concerning screw gauge. ( Shall be enclosed as and when prepared).
 Test shall be planned by the end of the month for evaluation.
Special needs modification.
 Suggest youtube videos on measurements.
 Modified worksheets to be given.