CLASS- 8- NCERT CHAPTER 3-TO-6 SCIENCE AND MATHS

 

Concept	Visual Aid	Key Idea
Fossil Fuels	Coal & oil barrel	Non-renewable energy sources
Fire Safety	Fire extinguisher	Prevent accidental fires
Energy Conservation	Solar panel & bulb	Save energy for future
Science Lab	Microscope & test tubes	Safe experiments and observations

Concept	Visual Aid	Formula / Note
Angles	Protractor with 60°	Measure with protractor
Area & Perimeter	Rectangle labeled $l,b$	Area = $l\times b$, Perimeter = $2(l+b)$
Geometric Tools	Compass, ruler, set square	Used for accurate construction
Accurate Figures	Triangle diagram	Precision is key

Concept	Visual Aid	Key Idea
Data Handling	Bar & pie charts	Represent data visually
Probability	Spinner diagram	Measure of chance
Squares	Grid of squares	Area = side × side
Square Roots	Long division steps	Reverse of squaring