Term: 1^st 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

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

Main Scale Reading = 3.0cm

Vernier Scale = 0.7cm

Reading = Main Scale Reading + Vernier Scale Reading

= 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

Circular Scale (Thimble) Reading= 0.38mm

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

Lesson Notes By Weeks and Term - Senior Secondary 1