கணிதம் கோட்பாட்டுக் குறிப்புகள்

சுற்றளவு

Perimeter is simply the distance you would walk if you traced the whole outside edge of a shape and came back to where you started.

வர்க்கமூலம்

Every time you know the area of a square and want to find the length of one side, you are taking a square root.

பின்னங்கள்

Half a cup of flour, a third off the price, a quarter tank of petrol, splitting a bill three ways — fractions are how we talk about parts…

ஈருறுப்புக் கோவைகள்

Every time a builder works out the area of a plot whose sides are given as expressions, or a shopkeeper mentally squares 103 to price a…

ஒருங்கமைவு

Every time two machine parts must fit, two roof beams must carry the same load, or a tiled floor must repeat a pattern without a single…

பரப்பளவு

Look at a circular kokis mould, a hand-held fan opened part-way, a slice cut from a birthday cake, or a pie-shaped plot of land marked out…

இருபடி கோவைகளின் காரணிகள்

Multiplying two brackets to get a quadratic is easy — you learned it in Grade 9.

முக்கோணிகள்

Look at almost any built thing that has to stay standing — a roof truss, a bridge girder, the A-frame of a step ladder, the gable of a…

நேர்மாறு விகிதசமம்

When more workers join a job it finishes sooner; when a bus goes faster it arrives earlier.

தரவு வகைகுறிப்பு

Every day the world hands you raw numbers — election results, a family budget, the marks of a whole class — and raw numbers are hard to…

அட்சரகணிதக் கோவைகளின் பொ.பொ.ம

The moment you try to add two algebraic fractions with different denominators — say (1)/(2x) + (1)/(3y) — you hit a wall until you can find…

அட்சரகணிதப் பின்னங்கள்

Every formula that divides one changing quantity by another is an algebraic fraction: speed as (distance)/(time), a profit margin as…

சதவீதம்

Every time you see "20% off" on a shirt in a Pettah shop, a bank offer "8% interest per annum", or a bill that adds "15% VAT", you are…

சமன்பாடுகள்

Almost every real decision that involves an unknown amount hides an equation.

இணைகரங்கள் I

Look at a garden gate, a folding clothes-drying rack, or the criss-cross scissor-lift on a lorry — they all hold their shape because of…

இணைகரங்கள் II

In Lesson 15 you learned what a parallelogram is and the neat properties that follow from it.

தொடைகள்

Every time a survey asks "how many students play cricket, how many play football, and how many play both?" you are really being asked a…

மடக்கைகள் I

Some numbers in the real world grow by multiplying, not by adding — the strength of an earthquake on the Richter scale, the loudness of…

மடக்கைகள் II

Before calculators sat in every schoolbag, engineers building bridges, astronomers charting stars, and accountants closing the year's books…

நேர்கோட்டு வரைபுகள்

Almost every real cost you meet has a "starting amount" and a "rate".

விகிதம்

Every time a bus timetable promises you'll reach Colombo in three hours, every time you glance at a fuel gauge and wonder if you'll make it…

சூத்திரங்கள்

A formula is a rule written in symbols, and the whole point of a rule is that you can use it whichever way you need.

முக்கோணிக் கோணத் தேற்றங்கள்

Look at the roof of a house, the truss of a bridge, or the frame of a bicycle — you will find triangles everywhere, because a triangle is…

நேரியல் சமனிலிகள்

So much of real life is not "exactly equal to" — it is "at least", "no more than", "under the limit".

அலைவெண் பரம்பல்

Imagine a teacher marks 200 exam papers.

நாண்-மையத் தேற்றம்

Circles are everywhere in real life — the rim of a bicycle wheel, the arch of a bridge, the plan of a circular paddy plot being surveyed.

கேத்திரகணித அமைப்புகள்

Every time a mason marks the corners of a house so the walls meet squarely, or a carpenter cuts a picture frame whose opposite sides match…

மேற்பரப்பளவும் கனவளவும்

How much paint covers a cylindrical water tank?

நிகழ்தகவு

Every day you weigh chances without noticing: will it rain before you reach home, which cricket team is likelier to win, is it worth buying…

மெய் எண்கள்

Real numbers form the foundation of all quantitative mathematics at the O/L level.

சுட்டிகளும் மடக்கைகளும் I

Indices (also called exponents or powers) provide a shorthand way of writing repeated multiplication.

சுட்டிகளும் மடக்கைகளும் II

This lesson extends the basic laws of indices and logarithms to more advanced applications, including solving exponential and logarithmic…

திண்மங்களின் மேற்பரப்பளவு

The surface area of a solid is the total area of all its external faces or surfaces.

திண்மங்களின் கனவளவு

Volume is the measure of the amount of three-dimensional space occupied by a solid object.

சமாந்தரக் கோடுகளுக்கிடையிலான உருவங்களின் பரப்பளவு

This lesson focuses on finding the area of plane figures that lie between two parallel lines.

பங்குச் சந்தை

The share market is a platform where shares of publicly listed companies are bought and sold.

நடுப்புள்ளித் தேற்றம்

The Midpoint Theorem is a fundamental result in Euclidean geometry that establishes a relationship between the midpoints of two sides of a…

வரைபுகள்

A graph is a visual representation of the relationship between two variables.

சமகோண முக்கோணிகள்

Equiangular triangles are triangles in which all three interior angles are equal.

தரவு வகைகுறிப்பும் வியாக்கியானமும்

Data representation and interpretation is the process of organizing, displaying, and drawing conclusions from numerical information.

பெருக்குத் தொடர்கள்

A Geometric Progression (GP) is a sequence of numbers where each term after the first is obtained by multiplying the previous term by a…

பைதகரஸின் தேற்றம்

Pythagoras' Theorem describes a fundamental relationship between the three sides of a right-angled triangle.

திரிகோணகணிதம்

Trigonometry is the study of relationships between the sides and angles of triangles.

தாயங்கள்

A matrix is a rectangular arrangement of numbers (or other mathematical objects) enclosed in square brackets.

சமனிலிகள்

An inequality is a mathematical statement that compares two expressions using inequality symbols.

வட்ட நாற்பக்கல்கள்

A cyclic quadrilateral is a quadrilateral whose four vertices all lie on a single circle.

தொடலிகள்

A tangent is a straight line that touches a circle at exactly one point.