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|TCode||TACtivity Name||TACtivity Description||Packs|
|PF08||Hand Cart Model||Humans have been using different forms of transport for more than a few millennia to make their life and work simpler, faster, more efficient and more fun! The development of the wheel has been one of the most significant breakthroughs of human endeavour. Through rapid progress in the industrial age, we have reached previously unimaginable heights in transport technology. Here, we make a simple toy cart using foam, skewers and bottle caps, that can be steered as you explore the forces involved when the cart moves.||PACK OF 4||PACK OF 10|
|PS09||Vibrating Membrane Model||Sound is produced when an object vibrates fast enough to agitate particles around it, which then transfer that energy to adjacent molecules to create a pressure wave in a given medium. Not only does sound need a medium to travel, there needs to be an impetus to cause a disturbance in the medium to manifest itself as sound.
In this joyous TACtivity, you make your own Bugle, using a balloon as the vibrating membrane and attaching it to different lengths of PVC pipe to create sounds of beauty and wonder!
|BP08||Wick Irrigation Model||Various irrigation techniques are used world over to water agricultural as well as domestic plants. In this remarkable water-saving wick-irrigation system, we use waste plastic bottles and some strips of waste cloth to sow and grow seeds in a cocopeat base, and observe the rate of plant growth as well as water usage|
|PF28||Water Sprinkler Model||A water sprinkler is a device used to spray water on plants in a field or garden. It is also used to irrigate (or supply water to) crops, lawns, golf courses, etc.
In this TACtivity, we will learn to create a water sprinkler model – in essence a centrifugal pump – using straws and a stick. You will see that when the straws are partially submerged and twirled in water, a beautiful sprinkle emerges from the slits in the straw.
|BA22||Body Joints – Fingers||With three joints and a length comparable to that of the palm, human fingers can be utilised for achieving a great variety of work. The thumb is an exception, with two joints instead of three, and a different angle compared to other fingers. In fact, it is the opposable thumb that evolutionary biologists credit with being the main anatomical difference between us and the great apes that has allowed us to be the most dextrous and creative beings ever known. Here, we model the human fingers using string, cardboard and foam so as to appreciate the value of its unique design and its evolution with time.|
|BE01||Boat Model||Using the energy stored in a rubber band, make a self-propelled bottle boat using ice-cream sticks as the propeller. This demonstrates how ducks swim and how ships propel themselves.||PACK OF 6|
|PM03||DIY Electromagnet||A current carrying conductor produces a magnetic field, i.e. it becomes an electromagnet. In this TACtivity, we wind enamelled copper wire around a nail and connect the two ends of the wire to a cell. How does the nail start to behave? Can it start to lift iron filings, or does it have an effect on paper/safety pins?|
|CP13||Matter – Gas Mass||We are often told that all matter has mass. We know that gas is a form of matter, so it must have mass! However, have you ever tried proving that gas has mass? In this ingenious experiment, we use a self-made beam balance and a couple of balloons to discover for yourself whether gas has mass or not!
|PL23||Box Pinhole Camera||A pinhole camera is a simple camera without a lens but with a tiny aperture. When light passes through this tiny aperture, it projects an upside down image of the object being observed through the aperture. In this TACtivity, we will make a pinhole camera using a chart paper, butter paper, and tape to see lovely inverted images.|
|CC25||Acids & Bases – Turmeric Indicator||There are many wonderful natural acid-base indicators. One such ubiquitous food item in Indian households is turmeric powder. The dazzling yellow of turmeric turns a deep red when exposed to a basic/alkaline substance. However, it remains yellow if the test sample is neutral or acidic. The deep red powder created by exposing turmeric to a basic substance is nothing but vermilion, which is now your natural acid indicator, as it will turn back to yellow (turmeric) when exposed to an acidic solution, but will remain a deep red when exposed to a basic or neutral substance. Enjoy testing various household items, edible and non-edible, for their acidity or alkalinity!|
|PF20||Parachute Model||Using plastic sheets of different sizes and pieces of thread to make a parachute, you can show how the area of a surface affects air drag/resistance and how various objects – both in nature and man-made – use this principle to their benefit.|