Effective and fun math teaching

Squares and roots  When a number or integer (not a fraction) is multiplied by itself, the resultant is called a 'Square Number' . For example, 3 multiplied by 3 is equal to 3-squared or 3 x 3 = 3 2 . Some interesting facts  This particular collection of numbers are called square numbers (or squared numbers) for the simple reason that they form the area of a square. As squares have equal sides, finding the area is simple – just “square” (multiply by itself) one of its sides! As we know that all the perfect square number ends with  1,4,9,6,5,0. So, a number having 2,3,7 or 8 at unit's place is never a perfect square. 1. The square numbers end in 0, 1, 4, 5, 6 or 9 only. 2. If a number ends with 1 or 9, its square ends with 1. 3. If a number ends with 2 or 8, its square ends with 4. 4. If a number ends with 3 or 7, its square ends with 9. 5. If a number ends with 4 or 6, its square ends with 6. 6. If a number ends with 5 or 0, its square also ends with 5 or 0, re...

It is always fun to start a game in class, especially your offline class. The prospect of game energizes the whole class and you will get added benefit of every kid involved no matter what their age.  Here are some games to try.  Interesting fun fact with number 4. A nice game to play with your students of grade 2 and above.  Ask them to write the biggest number name they know.  For example  One hundred ninety nine. Count how many letters it has. The above number has 20. Ask them to write the number name of 20 and count the letters in it   Twenty. It has six letters. Now six has three letters. Three has five letters. Five has four letters.  Four has four letters. Game ends.  Let us try another number name . Thirty nine.   Count how many letters.  Ten letters. Ten has three letters. Three has five letters. Five has four letters.  Four has four letters.  Game over.  So as you can see, no matter how big the number n...