Measuring Objects

BASIC SCIENCE

Basic 4

TOPIC: Measuring Solid

Solid volume is “the amount of space occupied by a solid object”. The volume of solid is expressed as cubic units. The method to determine the volume of a solid object depends on the shape of the objects.

PERFORMANCE OBJECTIVES

By the end of the lesson, the pupils should have attained the following objectives (cognitive, affective and psychomotor):

measure the volume of regular solids;
measure the volume of irregular solids.

ENTRY BEHAVIOR

The pupils are required to already have learned…

INSTRUCTIONAL MATERIALS

The teacher will teach the lesson with the aid of objects in the classroom e.g. cupboard, school box, books, etc. Stone, water, metre rule, tape, rule, beakers, measuring cylinders.

METHOD OF TEACHING

REFERENCE MATERIALS

Search Engine/Internet

CONTENT OF THE LESSON

INTRODUCTION(MEANING)

MEASURING SOLID

That is:

Volume of an irregular shape can be determined by using water displacement:

volume of an irregular solid objects = volume of object + water – volume of water (m3)

MEASURING THE VOLUME OF OBJECTS

REGULAR SOLID OBJECTS

Teacher’s/Pupil’s Activities Measuring the length, breadth and height of the following and record the values in the right. Find the volumes.

IRREGULAR SOLID OBJECTS

Teacher’s/Pupil’s Activities

To measure the volume of a small irregular solid, follow the steps below:

Put some water in a measuring cup or cylinder.

Read the volume and record it.

Gently drop the object (i.e. irregular solid) into the liquid in the cylinder or cup.

Read the new volume and record it.

Substrate the first volume from the second volume.

PRESENTATION

To deliver the lesson, the teacher adopts the following steps:

To introduce the lesson, the teacher revises the previous lesson. Based on this, he/she asks the pupils some questions;
Provides pupils with meter rule, tape rule, etc.
Pupil’s Activities – Measure and record the length and breadth of objects in metric units.
Guides the pupils to determine the area of plane surface by direct measurement;
Pupil’s Activities – work in group, use string or pieces of thread to trace the area of desk-top place the string on a metre rule and note the length of the thread or string.
Guides the pupils to determine the areas of surfaces by computation (i.e. L x B = A cm2), etc.
Determine the area (A) of their desk-top by computation and compare the results.

CONCLUSION

To conclude the lesson for the week, the teacher revises the entire lesson and links it to the following week’s lesson.

LESSON EVALUATION

Pupils to:

measure the length and breadth of objects and things;
record measurements in metric units;
use their measurements to compute the area of objects and things in the classroom.

About The Author

Alabi M. S.

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