procurement of material to support science and math activities for classes 9th to 12th (secondary level) in 3145 govt. schools of the state. as per bid document , 3145 secondary & senior secondary kit (description be seen in bid document) , class 9 – science chapter 12: sound class 11 – physics (part i) chapter 15: waves activity based on resonance , class 10th– science: - chapter 10: light – reflection and refraction chapter 11: the human eye and the colorful world class 11th– physics: chapter 9: ray optics and optical instruments class 12th– physics: - chapter 10: wave optics activity based on principles of light reflection, refraction, ray optics and optical instruments , class 9:-science chapter 4: structure of the atom. class 11 :- chemistry chapter 2: structure of atom activity based on structure of atom , class 12th – physics chapter 5: magnetism and matter activity based on magnetism , class 12 – physics chapter 6: electromagnetic induction activity based on lenz’s law and electromagnetic induction , class 9th science chapter 10: gravitation class 11th – physics chapter 7: system of particles and rotational motion chapter 8: gravitation activity based on gravity , class 10 – science chapter: chapter 12 – electricity class 12 – physics chapter: chapter 3 – current electricity heating effect of electric current , class 10 science – chapter 6: life processes class 11 biology chapter 16: digestion and absorption activity based on digestion of carbohydrate in the mouth , class-10, science - power supply , class 10 math chapter 8: introduction to trigonometry chapter 9: some applications of trigonometry class 11th maths chapter 3: trigonometric functions class12th maths chapter 2: inverse trigonometric functions activity based on trigonometry concepts , class 9 – mathematics chapter: chapter 7 – triangles chapter: chapter 10 – circles class 11 – mathematics chapter: chapter 10 – straight lines (coordinate geometry) class 12 – mathematics chapter: chapter 11 – three-dimensional geometry activity based on symmetry , class 9th chapter 3: coordinate geometry class 11th maths chapter 10: straight lines activity based on area of rhombus , class 9 chapter 3 – coordinate geometry class 10 chapter 7 -coordinate geometry class 11 chapter 10 – straight lines class 12 chapter 10 – vector algebra chapter 11 – three-dimensional geometry identify lines of symmetry, area and perimeter in various shapes. activity based on coordinate geometry , class 9th chapter 3: coordinate geometry class 10 chapter 7: coordinate geometry class 11 chapter 10: straight lines activity based on mid-point of quadrilateral , class 9 – mathematics chapter 2: polynomials class 10 – mathematics chapter 2: polynomials chapter 3: pair of linear equations activity based on algebra identity , class 9th -mathematics chapter 1: number systems class 10th -mathematics chapter 1: real numbers activity based on square root spiral