Let us learn 2-D and 3-D Shapes

## November 25, 2011

## November 24, 2011

### Learning of Space

A polygon, a name derived from Greek meaning many-angled, is a plane geometric figure bounded by three or more sides. Common examples of polygons are triangle, quadrilateral, pentagon and hexagon. All polygons have vertices, which are the angle points where two sides meet. Thus, the number of sides indicates the same number of vertices of a polygon. For example, a four-sided quadrilateral would have four vertices. Similarly, a n-sided polygon would have n vertices.

Two-dimensional figure is enclosed by straight lines or curves. Various types geometrical shape such as square, rectangle, equilateral triangle, and circle. A triangle has three sides. A quadrilateral has four sides. Figures with round shapes are called circles, and have curved side. A square has four sides equal in length.

Three-dimensional geometric figures such as cube, cuboids, pyramid, sphere, cylinder and cone. Four sides of a cube are equal. Length, width and height of cuboids are different. Cone has a base of a circle. Pyramid has a square base. Pyramid with base of a rectangle. Cylinder has a circled base. Sphere with shape of a ball.

## November 23, 2011

### Three-Dimensional Geometric Forms

3D Shapes

Cuboid

Cube

Prism

Cylinder

Cone

Pyramid

Sphere

## November 22, 2011

### Two-Dimensional Geometric Figures

Having fun with 2D Shapes

## November 21, 2011

### 2D Shapes

2D shapes

Circle

Triangle

Oval

Rectangle

Square

## November 20, 2011

### Matching Shapes With Krog

Let us play together

## November 19, 2011

### Two Dimensional Geometric Forms

These geometric figures have only two dimensional plane surfaces –

*length*and*breadth*. A plane surface means that the line joining any two points in the plane lies wholly in the plane.## November 18, 2011

## November 17, 2011

### Conversion of volume of liquid involving litres and millilitres

1000 m

*l*= 1 litre2 litres = 2 x 1 litre

= 2 x 1000 m

*l* = 2000 m

*l*2340 m

*l*= 2340 ÷ 1000*l* = 2.340

*l*## November 16, 2011

## November 15, 2011

### Volume of Liquid

Let’s do it together

## November 14, 2011

## November 13, 2011

### To ascertain and read the standard unit of millilitre and write its symbol ml

(1) The amount of water in the bigger cylinder is 10 times as in the smaller cylinder.

(2) The smaller cylinder can fill with liquid up to 1000 millilitres.

(3) Millilitres is a smaller unit for measurement of the amount of liquid.

(4) The symbol for milliliters is m

*l*(5) 1

*l*is equal to 1000 m*l*## November 12, 2011

### Liquid Measure

Have fun with liquid measure

## November 11, 2011

## November 10, 2011

### Measure Match (kg)

Have fun with Measurement of Weight

## November 09, 2011

### Measurement of Weight

Come and try it

## November 08, 2011

### kg to kg and g to g

1 kg = 1000 g

To change kg to g, multiply 1000

3.46 kg to g

3.46 kg = 3.46 x 1000 g = 3460 g

To change g to kg, divide 1000

2768 g to kg and g

2768 g = 2000 g + 768 g

= 2000 g ÷ 1000 kg + 768 g

= 2 kg 768 g

## November 07, 2011

### Measurement of Weight

Have fun together

## November 06, 2011

## November 05, 2011

### Measurement of Weight

Come and have a try

## November 03, 2011

### Changes units of cm and mm

6 cm = 6 x 10 mm = 60 mm

5.4 cm = 5.4 x 10mm = 54 mm

In order to change the unit of cm to mm, we need to multiply the number of cm by 10.

87 mm = 87 ÷ 10 cm = 8.7 cm

24 mm = 24 ÷ 10 cm = 2.4 cm

In order to change the unit of mm to cm, we need to divide the number of mm by 10.

## November 02, 2011

### Measurement of length using millimetre (mm) and centimetre (cm)

cm = centimeter

mm = millimeter

1 cm = 10 mm

## November 01, 2011

### Measurement of Length

Come and have a look on how to measure the length of an object

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