Tangram is a traditional Chinese puzzle made of a square divided into seven pieces (one parallelogram, one square and five triangles) that can be arranged to match particular designs.

__Tangram__

__Create
shapes using tangram pieces__

Tangram is a traditional Chinese
puzzle made of a square divided into seven pieces (one parallelogram, one
square and five triangles) that can be arranged to match particular designs. We
can make many figures of animals people and other things. Simplified version of
tangram puzzle is available with five pieces also.

** **

__5 pieces tangram__

look at 5 pieces of the tangram. cut
the 5 pieces from a paper with help of your elders and try make the given
shapes out of it.

__Try this__

How many triangles are
there in a five piece tangram set? Are they equal in size?

**Answer:**

There are three
triangles. 2 and 5 equal in size, but 1 is different in size.

** **

__7–pieces tangram__

Here is the picture of a seven–piece
tangram. You can cut out these pieces from a paper and put them together in
different ways to make some very interesting shapes.

**Teacher’s note:** Teacher can enable the children create various
shapes using the tangram sets.

** **

__Practice__

Number the pieces in
each of these figures according to the numbering in the tangram puzzle.

**Tile a given region
using a tile of given shape.**

When you fit individual
tiles together with no gaps or overlaps to fill a flat space, you have a **tiled
floor**.

**Observe the pictures**

Baked clay in the form
of a shape that is used to cover surfaces is called **tile**.

**Let us Explore**

There are some shapes that cannot be
used to make tiling patterns why? what are they? Name them and give reasons.

**Answer:** opposite side or diagonals must be equal for tiles to join. Some
shapes that cannot be used to make tiling patterns are Circles or ovals. Both
have no opposite side to joint.

** **

__Practice__

Complete the following
tiling pattern.

When we repeat individual tiles or
patterns together with no gaps or overlaps to fill a flat space, the
arrangement is called tessellation (or tiling).

** **

__Activity 6__

Tessellate a new region
using the following shapes:

Triangles, squares,
hexagons are the regular polygons tessellate in the plane.

Here

**Distinguish between
shapes that tile and that do not tile.**

Observe the following pictures that do
not tile.

Though pentagons and heptagons are
regular polygons they do not tessellate.

** **

__Activity 7__

Ask the children to draw
tessellate in the plane region using square and pentagon.

Tags : Geometry | Term 1 Chapter 1 | 3rd Maths , 3rd Maths : Term 1 Unit 1 : Geometry

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3rd Maths : Term 1 Unit 1 : Geometry : Tangram | Geometry | Term 1 Chapter 1 | 3rd Maths

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