Science lab

seminar on science lab

1. SCIENCE LABORATORY 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