Lesson Notes By Weeks and Term - Senior Secondary 1

Measurement of distance

Term: 1st Term

Week: 2

Class: Senior Secondary School 1

Age: 15 years

Duration: 40 minutes of 5 periods each

Date:

Subject:      Physics

Topic:-       Measurement of Distance

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

1. Mention and explain tools used for measuring distance

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers, demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

 PRESENTATION TEACHER’S ACTIVITY STUDENT’S ACTIVITY STEP 1 INTRODUCTION The teacher reviews the previous lesson on the introduction to physics Students pay attention STEP 2 EXPLANATION He mentions tools used for measuring distance Students pay attention and participates STEP 3 DEMONSTRATION He explains the uses of each tool Students pay attention and participate STEP 4 NOTE TAKING The teacher writes a summarized note on the board The students copy the note in their books

NOTE

MEASUREMENT OF DISTANCE

MEASUREMENT OF DISTANCE USING VERNIER CALIPER

Vanier Calipers can be used to measure the diameter of a rod or the inside diameter of a rod. It can also be used to measure the internal and external diameter of a tube. It has two set of jaws and two scales i.e. the main and the Vanier scale. It has a reading accuracy of 0.01cm

Example:

Deduce the reading on the vernier caliper below

Solution

Vernier Scale = 0.7cm

= 0 + 0.7

= 7mm

MEASUREMENT OF DISTANCE USING MICROMETER SCEW GUAGE

Micrometer screw gauge is used to measure small length like the diameter of a small ball (like pendulum bob) or thickness of a piece of paper. It can measure the accuracy 0.001cm or 0.01mm on the main scale.

Example: Calculate the reading on the micrometer screw gauge below

Solution

Main Scale (Sleeve) Reading = 2.5mm

Actual Reading = 2.5 + 0.38

= 2.88mm

MEASUREMENT OF DISTANCE USING METER RULE

The meter is graduated in centimeters and millimeters. The smallest graduation of the meter rule is 1mm or0.01m. Long distances such as the width or length of a large farm or football field can be measured with steel tapes graduated in meters.

EVALUATION:    1. Mention and explain tools for measuring distance

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively