ten little fingers - arvind gupta (4 mb pdf)

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BUTTON PULLEYS1. You will need needles, thread,paper clips, pins, old ball-penrefills and cheap quality pant/coatbuttons. The plastic of thesebuttons should melt with a hot needle.VALVETUBE2. Put two similar buttons backto-backand sew them with aneedle/thread in the form of asquare Do not make a crossstitchas this will cover the centre.6. Different sizes ofcheap quality buttonscan be used to makedifferent sizes of pulleys.Several big and smallpulleys can be assembledinto pulley blocks.3. Now make a hole throughthe centre of the two buttonsusing the tip of a hot needle.4. Make the bore smooth untilthe pulley rotates smoothly onthe needle.5. Make the hanger of thepulley by opening up a paperclip. Bend one of its legs atright- angles and slip in thebutton pulley. Put a cycle valvetube as a stopper to preventthe pulley from slipping out.7. Make a laddershaped hanger forhanging the pulleys.Use empty ball penrefills for the longmembers and paperpins for the shortmembers of the ladder.With the help of thesepulley blocks you canlift heavy loads byapplying less force.8. Assemble three pulleys andthree separate strings in the aboveconfiguration. Put 5 new matchboxes(approximately 50 gms) onthe load end. Now, put one newmatchbox (10 gms) at the effortend. You will be surprised to findthat one matchbox is able to lift upa load of 5 matchboxes.
TIN CLOCKToday Montessori teaching aids have become so expensive that even the very rich schools cannotafford them. The Montessori Clock for teaching how to read time costs over Rs.200. Apart from itsexpense it also occupies a lot of space. You could build your own tin clock for less than One Rupee!But then you will have to collect a lot of throw away junk.1. You will need a circular lid of an old tinbox, an old ball pen plastic refill, a 1 cm.diameter press-button, some aluminiumfoil, a pin, a matchstick and someordinary hand tools. You will need asmall tube of Araldite to stick thebutton to the lid.2. Make a hole in the centreof the lid with a nail.3. Stick one half of a big press-button in thishole using a drop of Araldite.Keep the assembly to dry overnight.4. Cut an 8 mm. diameter circle out of analuminium foil. Punch a hole in its centre, andcut a little tongue in its rim. Insert a smallplastic refill in this tongue. This becomes thehour hand of the clock5. Bend the head of a paper pin at right angles.Insert this head into the depression in the otherhalf of the press-button and apply a drop ofAraldite. Leave it overnight to dry. Now the pinwill become attached to the press-button. Insertthe pin point in a refill using a piece of matchstickas the wedge. This becomes the minuteshand of the clock.6. Cut numbers from 1 to 12 from an oldcalendar and stick them on the face of the tinlid to make the dial of the clock. Assemble theneedles to complete the clock.7. Instead of the tin lid you can also use acircular cardboard for the dial. In this caseyou can sew one half of the press buttonin the centre of the cardboard.
Page 2: SCIENCE ACTIVITIES & IDEASIf childr
Page 5 and 6: JUMPING FROGThis is an amazing pape
Page 7 and 8: PAPER PUPPETSMost children make the
Page 9 and 10: FUN WITH PAPERCircular SpringTake a
Page 11 and 12: EVERYTHING HAS A HISTORYScience is
Page 13 and 14: SHAPECut a lot of small and big geo
Page 15 and 16: SIZING UPTake a handful of small st
Page 17 and 18: SPINNING DICEIf you find that you c
Page 19 and 20: ZERO-COST INSET PUZZLESOld rubber s
Page 21 and 22: LENGTHIf you know the lengths of so
Page 23 and 24: VOLUME20ml.1. Dip a little cotton b
Page 25: WEIGHT1. Make a weighing balance us
Page 29 and 30: NUMBER PATTERNSIt is sad to see chi
Page 31 and 32: THREE DIMENSIONAL MODELS1. Pierce a
Page 33 and 34: GEOMETRY BY PAPER FOLDINGMost of th
Page 35 and 36: PAPER CUBEUsing six similar squares
Page 37 and 38: Slipper AbacusPLACE VALUE / DECIMAL
Page 39 and 40: ROULETTEEmpty ball pen refills are
Page 41 and 42: PAPER PROTRACTOR1. Take a 10cm x 10
Page 43 and 44: TANGRAMTangram is a thousand year o
Page 45 and 46: BEST PESTLessons are mugged up for
Page 47 and 48: FLYING FISH1. To make it all you ne
Page 49 and 50: DANCING DOLLYou will need one sheet
Page 51 and 52: LOOP GLIDER1. Cut two strips of pap
Page 53 and 54: Aeroplane Wing1. Cut a piece of pap
Page 55 and 56: Can you fill the empty bottle?Place
Page 57 and 58: SPRINKLER1. Tie a metre long string
Page 59 and 60: BAREFOOT PATHOLOGISTSOften the scho
Page 61 and 62: HearingOUR SENSES1. Close one ear w
Page 63 and 64: BIRD IN A CAGEWe see things with ou
Page 65 and 66: SHADOW CREATURESA shadow is formed
Page 67 and 68: DROP MICROSCOPE1. Take a glass slid
Page 69 and 70: MIRROR RACINGDISAPPEARING DOTTo do
Page 71 and 72: CLAP IN THE AIRGenerations of child
Page 73 and 74: PAPER CRACKERCrackers used during t
Page 75 and 76: ON MICE AND CHILDRENAn American pro
Page 77 and 78:
FUN WITH HEATHot or Cold?Dancing Co
Page 79 and 80:
BRIGHT IDEASChildren learn a great
Page 81 and 82:
A REVOLUTIONARY MOTORA rotating ele
Page 83 and 84:
SIMPLY ELECTRIFYING!Add charge to a
Page 85 and 86:
THE CAPTAIN’S HAT STORYLillian Op
Page 87 and 88:
RAJA CAP, NEHRU CAP, KULU CAP1. Wit
Page 89 and 90:
Finished SkeletonPAPER SKELETONTo m
Page 91 and 92:
LEAF ZOOThere are many kinds of tre
Page 93 and 94:
MATCHBOX TROLLEY1. To make the Matc
Page 95 and 96:
MATCHBOX RIDERAll it takes to make
Page 97 and 98:
1. Take two strings each 80-cm long
Page 99 and 100:
1. Collect two torch batteries and
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1. To make an air jack you will req
Page 103 and 104:
SLOTTED ANIMALSThese slotted animal
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Catch a ButterflySOME INTERESTING T
Page 107 and 108:
MOSQUITO OR FLY1. Take a 1.5 metre
Page 109 and 110:
Nearly 150 years ago, Chief Seattle
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SIMPLEST SOLAR COOKERThis solar coo
Page 113 and 114:
If something is done in thespirit o
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ROLLER PRINTINGAny symbol, or icon,
Page 117 and 118:
How to break a strong string?SOME A
Page 119:
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