seminar on science lab

1. Submitted By:Anjana Devi .S.R
B.Ed natural science

2. SCIENCE
LABORATORY
 Deepening of the student understanding that scientific
concepts and applications are closely ideated to this own
natural environment.

3. objectives of laboratory work.
Making abstract scientific understandings concrete
Development of scientific concepts and principles
Development of scientific skills , attitudes , interests and
appreciation
Training in scientific method
Awakening the maintenance of curiosity in the environment

4. [a] Importance of Laboratory
Work:- The laboratory helps the pupil in the development of
manipulative skills.
 Laboratory exercise train them in Scientific thinking they develop
scientific attitude and Scientific methods are as a result of
Laboratory work.
 The Laboratory, the teacher comes into closer contact with the
individual and helps them out of them their difficulties
 The achievements of modern science are mainly due to the
application of experimental method.
 In doing laboratory work the pupil get a chance for activity both
physical and intellectual and they are learning by doing.
 The laboratory , the teacher comes into closer contact with the
individual and helps them to bring out their difficulties

5. [b]General principles of
laboratory construction
 The laboratory should be compact in arrangement but at
the same time capable of expansion to meet the growing
needs of the school.
 Fittings and furniture should be planned to be convenient
for use and economical in the long run
 The arrangements of furniture should ensure ease of
supervision and proper lighting.
 There should be enough storage accommodation and
sufficient wall space should be left for additional fixtures.

6. [c ]Administration of Laboratory
work:-
 Organising and conducting
practical work.
 1. There should be co-ordination
of theoretical and practical work
 2. Experiments should neither be
too difficult nor too easy
 3. The purpose of the experiment
should be made clear to pupils
 4. A faithful record of experiments
should be maintained by pupils.
 5. Pupils work should be keenly
observed by the teacher.

7.  Students should be made to form
appropriate groups
 Preparation is required for individual and
group working
 Instructions to pupil are to be specific
clear
 Laboratory rules and disciplines should
be laid down

8. [d ]Features of a Good Science
Lab:-
 It must permit enough teacher supervision of
pupil’s work
 It must have water gas and electric points
wherever they are needed.
 It must have strong facilities for equipment’s.

9. Selection and Purchase of
Apparatus and chemicals:-
 The lists of apparatus may be divided into –
‘essentials’ and ‘desirables’.
1. Type of apparatus required
2. Quality of each item
3. Finance
4. The number of subject, taught
5. The knowledge and ability

10. [g] Laboratory Rules and
Discipline:-
 No pupil should be allowed to enter the
laboratory in the absence of the teacher.
 Every student should have a place assigned
to him for his experiments.
 Pupil should perform only those experiments
assigned by the teacher.
 Any breakage of apparatus or accidents or
injury must be reported to the teacher.

11.  Reagent bottler should be retained to the shelf
immediately after the shelf immediately after the
end there should not be misplaced.
 No equipment / chemical should be used until
proper instructions are received from the teacher.
 Specimens, solid waste , broken glass, burnt up
match sticks and other laboratory wastes should
be deposited in waste boxes
 Consider the safety of fellow students

12. h]Accidents in Laboratory And
First Aid:-
 This should contain acetic acid, cotton, carbolic acid, forceps,
magnesia, sodium carbonate, glycan, milk of magnesia, Vaseline
etc.
 It would be better to display a chart depicting the accidents that
are usual in the laboratory and remedies.


13.  Wound aids – apply cotton dipped in tincture
iodine
 Burns from fire – Cover the portion with linear
dipped in Vaseline
 Burns from acids- wash plenty of water and then
with 1% sodium bicarbonate solution.
 Injuries to eye – It should be dealt with by doctor
 Electric shock – switch off the electrical supply.
Beat with wooden stick. Admit to a hospital.

14.  Laboratory glass were must be never used as
drinking vessels.
 Concentrated solutions should be diluted
before they are poured down the sink
 Do not point to the other people with a test
tube
 Do not look into the mouth of a test tube while
heating its contents
 Do not sniff at toxic materials
 Always use test tube holders while heating
materials in a test tube.
[i] precautions while doing
laboratory practical