In this educational math lesson we'll discover the basics of angles, parallel lines and perpendicular lines. We'll look at the different types of angles that can be formed by intersecting lines and all that fun stuff.
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Adding Fractions with a Different Denominator
Subtracting Fractions with a Different Denominator

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#fractions
#fraction
#fractionsmath

This is the third example in a series looking at how to solve simultaneous equations using the elimination method.

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How do you put fractions on a number line? This allows you to compare equivalent fractions, and understand what the parts of a fraction mean. To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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#fractions
#fraction
#fractionsmath

Fractions are parts of numbers. In this introduction to fractions we look at the parts of a fraction - the numerator and the denominator, as well as proper fractions, improper fractions and mixed numbers and how these relate to each other.

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#fractions
#fraction
#fractionsmath

Multiply big numbers in your head!
And it's easy champions!

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Percentages, fractions and decimals are essential for high school maths students - yet a lot of students need extra help on these.
It is first of all important to realise that percentage, fractions and decimals are essentially describing the same thing - that is - they are describing a part of an amount.
Percentages describe part of an amount out of 100 - an easy way to think of this is if you think of cents in the dollar - e.g. 25% is like having 25 cents out of a dollar.
Fractions describe parts by telling us how many parts an object is out of another - for example - you have a pizza - cut it into 8 parts and eat 3 bits - thats 3/8 parts are eaten.
What is very important to understand with fractions is that they are written so that the top number is dividing the bottom number. 1/4 means 1 divided by 4, which equals 0.25 (decimal) or 25% percentage.
Decimals decribe a part of a number out of 1. For example 0.5 is 0.5 out of 1 or 1/2 or 50%....
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We can measure Angles in Degrees. There are 360 degrees in one Full Rotation (one complete circle around). In this lesson we learn how to measure the size of an angle, and how to contruct angles using a protractor.

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I use this method in math sometimes when I'm not certain how to proceed! Is it a trick? Probably not - but I use it lots in trigonometry and formula.
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ome people may find these easy - others not - but it is essential if you want to easily mentally multiply bigger numbers that you first master this.

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Here is THE mental multiplication lesson playlist - progressing you through your mental multiplication.
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Calculate the cube root of any perfect cube whose cube root falls between 1 and 100, in 2 seconds using vedic maths. This cube root trick makes math easy!

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Surface area is where we work out the area of a 3D object such as a rectangular prism. In this video we work out surface area of a real life example. To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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Okay, you've got me - this is Pythagorus' theorum....
Really easy though!
In a right angled triangle the square of the two smaller sides added together is the same as the square of the diagonal.

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This problem solving question involves rectangles, rectangles, rectangles...so you should find it easy...maybe? To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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In this video we look at how to use completing the square to solve quadratic equations using an easy example.

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It really helps and is appreciated!

In the video lesson, you will learn how to convert a number from standard notation to scientific notation by moving the decimal place. By doing this really big numbers and really small numbers can be easily described.
e.g to write 470,000 in scientific notation, write the number 4.7, (so that there is only one digit to the left of the decimal point), then count the number of places that the decimal point must be moved to get back to 470000 ( in this case is 5). If the number is big it is a positive exponent (like this one - which we'd write as 4.7 x 10^5).
A little number - like 0.0000033 gives a negative exponent (in this case 3.3 x 10^-6).
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These probability tricks will help you easily and quickly sort out those more difficult probability questions in no time. Through the use of the combination formula (which I'll briefly explain) you'll smash those probability questions fast!

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It is easy to convert metric lengths - from kilometres to metres to centimtres to millimetres. Learn how to do this instantly. To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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Trigonometry is an easy way to work out the unknown sides and angles of a right angled triangle. The trick - know the side names - the opposite, hypotenuse, and adjacent, and know how and when to apply the trigonomic functions - sin, cos and tan. this is the only trick to getting it right every time!
In this lesson, students learn work out unknown angles using use sine, cosine, and tangent. You will need a scientific calculator for the problems in this lesson - and I'll show you how to access one on your computer. To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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This math problem doesn't look very hard, but this problem is deceptively tricky...or is it?

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#mathproblems
#mathriddles
#mathsforfun