Class 8 Maths begins by explaining students about Rational Numbers where real numbers, rational numbers, representation of it on a number line is given. Further, Linear Equations in One Variable will help learn about the concept of linear equations and the methods to solve them. Next, Understanding Quadrilaterals and Practical Geometry deals in basics of quadrilaterals, polygons and how to draw quadrilaterals in certain conditions. Moreover, there is a chapter of Data Handling giving details about how to organize data and represent it using a bar graph, pictograph, pie chart, histogram and more. Next, Square and Square Roots plus Cube and Cube roots will teach squares of numbers and their properties and cubes of numbers and how to solve them. Comparing Quantities helps in understanding the increase and decrease of percentage, discount, profit and loss and more. Algebraic Expressions and Identities discusses like and unlike terms, multiplication of these expressions and more. Visualizing Solid Shapes will teach about cubes, cuboids, cones, cylinders and more plus their area. Next, Mensuration will deal in perimeter and areas of different figures and their volumes. It also has Exponents and Powers that explains powers and negative exponents and their laws. Direct and Inverse Proportions is about inverse proportion whereas Factorization will discuss the methods of factorization and their division. Finally, Introduction to Graphs and Playing with Numbers is about graphs in general and puzzles and divisibility tests.
What is a number line? And how exactly are numbers represented on this line? Well, the manner of the representation of numbers on a number line is what we call a number system. Let us find out some more interesting concepts about number systems.
The expressions with only one variable are called Linear Equations in variable. These expressions have only one variable, For example variable 'a', 'x' etc . Let us now study the chapter linear equations in one variable in detail.
The first things that we tend to understand about objects that we see are colour and shape. In many instances, we understand the function of certain objects by seeing their shapes. Thus, it is important to understand elementary shapes. Let's study the topics in this section.
Your life is surrounded by numbers. Marks you scored, runs you made, your height, your weight. All these numbers are nothing but data. Here we will learn what is data and how to organise and represent this data in forms of graphs and charts. We will also come across the concept of probability. Let us get started.
What are Squares and Square roots? So basically square of a number is the product of that number with itself. Now we know that 25 is a perfect square. Than what is 5 known as? 5 is the square root of the square number 25. In this chapter, we'll learn about Square and Square roots and how to find them.
Imagine there's a cardboard box in front of you and you want to know how many of oil containers can it contain. How would you find out? You'd do so by finding out the cube root of its volume. But how do you find a cube root? Let us find out!
During your summer holidays, you decide to visit the USA. And your parents tell you to plan the entire trip, how do you do it? How do you set a budget? We use simply use Algebra! Amazing isn't it? But do you know what is algebra and algebraic expressions? What are algebraic identities? Let us know more.
All of us have seen a pyramid, what's its shape? Conical! That's right. What about a football? What is the shape of a football? Spherical, you'd say? You're right again. So what're these shapes? These are solid shapes. In simple terms, we're visualising solid shapes. So, let us learn more about them.
Suppose you want to put a boundary around your garden or field. For that, you need to find out the length of the boundary. Also, what if you want to find out the area and volume of different geometrical shapes. Let us study the topic mensuration and mensuration formulas in detail.
When we have to repeatedly multiply a number by itself, we raise it to a power. This is known as Exponent. The power in the exponent represents the number of times that we want to carry out the multiplication. In this chapter, we will learn about powers, exponents and their peripherals.
When we say that some things are in proportion, we mean that there is a relation between those things because of which if the value of one thing changes, the value of rest of the things also changes. There are two types of proportions in Mathematics viz. direct and inverse proportion. Let's study more about them.
What are the graphs? Graphs are nothing but the chart that helps us to convey the information and yes of course to make sense of the data. A graph of different kinds can be applied in many ways. Let us study the graphs and its types in detail. Let's start with the bar and linear graphs and the pie charts.