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introduction when a class 5 child was given the problem if i paid rs 60 for 30 pencil boxes how much did b pencil box cost he said it would be
disinfectantsthe chemical substances that are employed to kill microorganisms although they cannot be applied on living tissues are known as
chemistry in action - antisepticsthe chemical substances that are utilized to kill or avoid the growth of micro-organisms are known as antiseptics
antimicrobials these are the chemical substances employed to cure infections because of micro-organisms these are as well known as microbes any
analgesics - narcotics and non-narcoticsanalgesics drugs which are relieved or decrease pain are known as analgesics these are of two typesi
antipyretic antipyretic is a drug that is accountable for lowering the temperature of feverish object the central nervous system specifically the
chemotherapy - chemistry in actionthe phrase chemotherapy that literally means chemical therapy or chemical treatment was coined in the year 1913 by
drugs - chemistry in actiondrugs may be a single chemical atom or a combination of two or more dissimilar substances an perfect drug should assure
in addition and subtraction we have discussed1 some ways of conveying the meaning of the operations of addition and subtraction to children2 the
disperse dyesthese dyes are utilized to colour synthetic fabrics for example orlon polyesters nylon and cellulose acetate that comprise tightly
there are a variety of strategies that people use for developing this ability for instance while adding 1821695 and 250 a person could estimate it
ingrain dyes developed dyes -ingrain dyes are those that are synthesised straight on the fabric instances of this type of dyes are azo dyes in this
mordant dyes these dyes comprise no natural affinity for the fabric and are applied to it along with the help of specific additional substances
before going further let us repeat an aspect of learning which is useful to keep in mind while formulating teaching strategies a child who can add or
relating addition and subtraction in the earlier sections we have stressed the fact that to help children understand addition or subtraction
dyesdye is a synthetic and natural colouring matter that is employed in solution to stain materials particularly fabrics all the coloured substances
classification of dyes according to their applicationdirect dyesthis type of dyes can be directly applied to the fiber both vegetable and animal by
importance of chemistry in life - chemistry in actionchemistry plays vital role in our regular life from the starting it has been in the service of
e1 how is the comparison model different from the complementary addition modele2 create one word problem related to the childrens world for each of
complementary addition -what number how many things should be added to one number or group to get the other eg a classroom can seat 50 children and
vitamins - biomoleculesadditionally to air water proteins carbohydrates fats and mineral salts specific organic substances needed for regulating some
comparison - the difference between two groups or numbers namely how much one is greater than the other how much more is in one group than in the
reduction -when the original amount and the balance or remainder are known to find the part that has been given away eg there were 15 toffees in a
partitioning - an action of taking away or removing some objects and finding out how many remain eg there were 15 toffees in this container and 10
developing an understanding of subtraction the process of subtraction is the reverse of that of addition adding more to a collection to make it