WELCOME

Presented ByAnjali.K.L

Physical ScienceCandidate Code -18214359002

Christnagar B.Ed College.,Thiruvallam

The Science Laboratory

Need and Importance of Practical Work in Science

To provide permanent knowledge to the students and this knowledge acquired practical work will be retained by the students for a long period of time

To provide various utilities and application of scientific facts in our daily life

To develop scientific attitude and interest in science among student. It provide the students with opportunities to acquire a scientific

knowledge andto become an enthusiastic experimentalist and discoverer.

To develop the habit of tackling any problem by scientific method in systematic and organised way

Need and Importance of Practical Work in Science (contd.)Self dependence,co-operation,initiativeness and self

reliance are developed through practical work.To provide situation for students to make use of different

scientific instruments and thereby make them technical minded.

To develop curiosity in the minds of young children.To promote research and experimentation.It fosters love for mechanical work in the laboratory.

Planning of science laboratoryOne must follow the following important

factors while planning a laboratory.It must be spacious.It must be conducive for physical work.It must permit enough teacher supervision of

the pupils work.It must have water,gas and electric points

whereever they are needed.

Planning of science laboratory(contd)

It must have ample storage facilities for equipments.

It must have an emergency exit if it is not situated in the ground floor.

Materials available in laboratory

Observation aids

Control aids

Glass wares

Ancillary aids

Materials

Teaching aid

Tools

Materials available in LaboratoryObservation aids consist of apparatus and

materials designed for qualitative and quantitative observation related to mass , length and time

Eg: chemical balance ,meter scales, stopwatches

Control aids includes apparatuses which are associated with phenomena like temperature, pressure ,volume etc.

Eg: Barometer, Boyles law apparatus etcGlasswares include glass jars,funnels,bell

jars,pippettes round bottom flasks funnels, watch glasses,conical flasks etc

Materials available in LaboratoryAncillary aids are used like supporting

instruments likes stands, clamps ,beakers etcMaterials include chemicals reagents

specimens and other consumable material Teaching aids include the aids used for

effective teaching like charts ,models , films,projectors,slides etc

Tools are the equipment required for repairing and maintaining of the apparatus

Storage of Chemicals Precautions in storing chemicals

Chemicals substances to be kept in well stoppered bottles.Eg:bleachingpowder,iodine,bromine water,hydrogenperoxide etc

Chemical substances to be prepared as required

Eg:aquaregia,ammoniummolybdate,sodium nitroprusside etc

Chemical substances to be kept in mineral naphtha or petrol Eg:sodium,potassium,magnesium ribbon

Storage of Chemicals (contd.)

Chemical substances to be stored in water Eg:phophorous,Picric acid

Chemical substances to be kept in a dark cupboard in a cool placeEg:ferrous sulphate,Nessler’s reagent etc

Registers in laboratory

Permanent Stock Register

Breakable Stock Register

Consumable Stock Register

Order Register

Requirement Register

Permanent stock register

Details of items which are not to be liable to be consumed or broken like troughs, magnets,stands etc

Permanent Stock Register

Specimen of Permanent Stock Register

Month and Date

Particulars

Details of Company

rate

No. Of Breaking Items

No. On

Hand

Teachers Signatur

es

Breakable Stock Register

The breakable stock register include articles of glassware like flasks, testtubes, beakers,funnels, pippettes,burettes etc

Breakable Stock Register

Date Details of

Broken Items

Signature of the student

How the breaking

took place

Signature of Science Teacher

Head of Dept.

Consumable stock register

Chemicals or fluids liable to be consumed like copper sulphate,distilled water, magnesium wire, sulphuric acid are entered in the register

Order register and requirement register

Order register includes a record of requisition sent for the purchase of new register

Requirement register includes the suggestions for new resources for the science laboratory

Safety in LaboratoryManagement of safety is a need for any science laboratory as it is the place where students are doing experiments of different kinds and nature.

Acccidents and First Aid• Poisons•Eye injurious•Burns

Heat burnsChemical burnsAcid burnsAlkali burnsPhosphorous burns

Safety in Laboratory(contd.)

•Electric Shock

First Aid KitFirst aid is the assistance given to any person suffering a sudden illness or injury, with care provided to preserve life, prevent the condition from worsening, and/or promote recovery.

Instruction CardsThe teacher can make postcard size instruction cards to all experiments in the laboratory.

The card is placed near the relevant experiment.

Each card should give details on aim, apparatus,procedure,tabular columns, any required diagrams and special precautions to be taken