Make a Trebuchet & learn factors affecting potential energy | School Science Projects

Make a trebuchet to understand:

Factors effecting gravitational potential energy possessed by an object due to its position
Factors effecting elastic potential energy possessed by an object as a result of deformation
Potential and kinetic energy and their interconversion
Law of conservation of energy

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Goods & bad habits -home, school, neighbourhood	Food chain	Agricultural practices	Road signs	Work & energy
My needs - foods we eat	Birds around us	Means of communication	Introduction to sound	Food chain - interdependence in living beings
People who help us	Transformation-modes,polution,fuel	Solar system - planets & its features	Animals - common insects	Degradable & non degradable waste
First aid	My needs - clothing	India - states, capital cities	Pollution - air , water	Desaster management - earthquake
Animal around us	Types of house	Waste materials management	India - river , major mountain ranges	India natural resources minerals & rocks
Parts of plants	Sense of direction	Hydraulic canon ( air & its properties )	Plants - photosynthesis roots & venation	Mosquito bite, structure, diseases & symptoms
Measurement	Plnats help us	Organs in the human body	Earth is oval ( rotaion & revolution )	Air around us - vaccum cleaner
Counting in groups	Animals - their shelter & young ones	Birds - types of beaks	simple machines inclined plane, wedge	Simple machines
Single digit addition & subtraction	Estimation length, weight & capacity	Plants - parts we eat	Modes of transpornt	Seed dispersal
Numbers - combination	Different shapes	Understanding fractions	Shadow projection	Rain water harvesting
Identifying diffrent shapes	Double digit addition & subtraction	making a stamp	Weaving	Systems in human body
Time	Place value - 4 digit numbers	Time division	Water purification	Natural phenomena phases of moon
Transportation air,water, land		introduction to baisc operations	Diffrent forms of energy	Numbers, factors & multiles
			Plants - pollination	Understanding elementtary shapes
			Fractions - comparing & adding like fraction	Kaleidoscope
			Introduction to data Handling

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Getting to know plants	Soil - types, profile, suitability for crops	Crop production & managemrnt	is matter around us	Chemical reaction & equations
Food - where does it come from	Waste water management	Microorganism - friends & foe	Compound formation	Carbon & its compound
Composting - recycling of organic waste	Heat - modes of transfer	Conservation of wildlife	Structure of atom	Life process
Fun with magnets	Fibre to fabric animal Fibre	Solar system - celestial objects & Satelites	the fundamental unit of life	Control & coordination
Components of food	Electric current & Its effects	Synthetic fibres & plastics	Works & energy	Heredity & evolution
Fibre to fabric - plant fibre	Light - image & objcet	Friction	force & laws of motion	Human eye & colourful world
Sepration of substation	Acids, bases & salts physics & chemical changes	Force pressure & area	Gravitaion	electricity series & parallel
Body movements	Weather, climate & adaptation	Sound - vibration	Sound - frequency & amlitude	Magnetic effects of electric current - DC motor
Motion & measurement of distance	Transportation in animal & plants	Light & reflection	Co-ordinate geometry	Application of trignometry
Light, shadow & reflections	Wind, stroms & cyclone	Some natural phenomena static electricity	Triangles - congruence	Circles
Basic electric circuit	Triangle & its propeerties	Chemical effects of electric current	Area of triangles & parallelograms
Math operations - bodmas rule	Symmetry: rotational symetry	Visualising solid shape
Practical geometry	Motion & time	Algebra - factrisation
Integers - positive & negative	Geometry - lines & angles	Mesuration surface area & volume
Algebra: expressions & equation	Exponents & power	Understanding quadrilaterals
Mesuration - area & perimeter	Symmetry: rotational symmetry
	Triangle & its properties
	Comparing quanitities