# Welcome to Planet Infinity KHMS

## 24 January, 2012

### Sample paper for SA2 Class 9 Mathematics 2011-12

Sample paper class9 Mathematics SA2 2011-12

### Sample paper for SA2 Class 10 Maths 2011-12

Maths Sample paper class 10 SA2

## 18 January, 2012

### Activity Area of a parallelogram

Objective: To get the formula for area of a parallelogram by paper cutting and pasting.
Material required: Dotted paper, pair of scissors, ruler, pencil, glue.
Procedure:
1.Draw a parallelogram on a dotted paper . Name it ABCD.
2. Drop a perpendicular from D on AB.
3. Cut along the perpendicular drawn as shown below.
4. Displace the cut out and place it adjacent to BC  as shown below.

5. Observe the new shape. It is a rectangle. Write the area.
Result: Area of a parallelogram = base x height

## 12 January, 2012

### Folding puzzle challenge!

Fold the rectangle along the lines in such a way that the squares are in serial order from 1 to 8, with number 1 face-up on top. You cannot tear the rectangle, just fold and possibly slightly bend it. Have fun!

## 09 January, 2012

### Ramanujan, a great Mathematician

Dear students, As you are aware that the year 2012, is celebrated as National Mathematics Year. Read about Ramanujan and his contribution in Mathematics.

## 06 January, 2012

### 2012, National Mathematics Year

Prime minister Manmohan Singh declared year 2012 as ‘National Mathematical Year’ as a tribute to maths wizard Srinivasa Ramanujan. PM said that the number of competent mathematicians in the country is “badly inadequate”. He also called for changing the perception that pursuit of mathematics does not lead to attractive career possibilities. He announced that his birthday - Dec. 22 - would henceforth be a National Mathematics Day and 2012 would be the National Mathematical Year.He was talking in a function to here mark the 125th birth anniversary of Ramanujan in Chennai.