3.1 Visualise and name 3-dimensional objects in the environment

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Visualise and name 3-dimensional objects in the environment

Activity 1:

To recognise, visualise and name 3-dimensional objects in the environment [LO 3.1]

To describe, sort and compare them [LO 3.2]

Prisms, rectangular prisms, spheres, cylinders, pyramids, and other objects are found all round us.

1. Study the following three-dimensional objects in order to learn their names and be able to recognize and name similar objects in the world around us:

2. Objects in the world around us: now try to draw and name the 3-D objects:

 Item Drawing Geometrical name of the object Cricket ball Cube of sugar (lump) Tin of dog-food
 Ice-cream cone Box of matches Packet of cornflakes Triangular box of sweets

3. More shapes and objects.

3.1 Write each of the following solid objects under the correct geometrical heading: The sun; a string of spaghetti; a block of ice; an ordinary candle; the handle of a garden rake; a book; an orange; a brick; a block of margarine. Think of others and write them in the columns too, especially the columns that seem to be rather empty.

3.2 Compare your lists with those of your friends. If they have an item that you have not thought of, you may add it to your list.

 Sphere Cylinder Cube Cuboid (rectangular prism) Pyramid Cone

. Write the correct geometrical name next to each of the following:

• a block of flats
• the walls of a rondavel
• a wigwam/tepee
• the roof of a rondavel
• the stones at Stonehenge

5. Look at the objects again. How many surfaces are there? Are the surfaces flat or curved? What shape are the surfaces? Fill in the missing words to describe the objects:

 Object Number of surfaces Flat or curved surfaces Shape of surfaces A box of cornflakes A ball A cube of sugar A candle A pyramid Sides:Base:

Activity 2:

• To recognise, visualise and name 2-D shapes and 3-D objects in the environment [LO 3.1]
• To describe, sort and compare 2-D shapes and 3-D objects from the environment [LO 3.2]
• To make 2-D shapes, 3-D objects and patterns from tangrams [LO 3.5]
• Two-dimensional shapes are flat. We can draw them on a piece of paper . Polygons are all closed geometric shapes with straight sides.
1. Polygons : Use your pencil and ruler to practise drawing these.

3 sides: Triangles

5 sides: Pentagons (when all the sides are equal in length, it is a regular pentagon; if they are different lengths, it is an irregular pentagon)

6 sides: Hexagons

7 sides: Heptagons

(Try to draw one regular heptagon.)

2. Circles

2.1 Circles are not polygons. Look at the circle below and compare it with the polygons that we have discussed:

• Complete: The circle is not a polygon because __________________________
• Now try to think of an example of each shape that we have considered, in your environment. Remember, they must all be flat because they are two-dimensional. In each shape below, fill in the road signs that you have seen in the world around you and on the way to school.

3.1 The Circle

3.2 The Triangle

3.3 The Square

3.4 The Rectangle

3.5 The Octogon

4. Cut out the TANGRAM on the next page. Cut out all the shapes in it.

find the 15th term of the geometric sequince whose first is 18 and last term of 387
I know this work
salma
The given of f(x=x-2. then what is the value of this f(3) 5f(x+1)
hmm well what is the answer
Abhi
how do they get the third part x = (32)5/4
can someone help me with some logarithmic and exponential equations.
sure. what is your question?
20/(×-6^2)
Salomon
okay, so you have 6 raised to the power of 2. what is that part of your answer
I don't understand what the A with approx sign and the boxed x mean
it think it's written 20/(X-6)^2 so it's 20 divided by X-6 squared
Salomon
I'm not sure why it wrote it the other way
Salomon
I got X =-6
Salomon
ok. so take the square root of both sides, now you have plus or minus the square root of 20= x-6
oops. ignore that.
so you not have an equal sign anywhere in the original equation?
hmm
Abhi
is it a question of log
Abhi
🤔.
Abhi
I rally confuse this number And equations too I need exactly help
salma
But this is not salma it's Faiza live in lousvile Ky I garbage this so I am going collage with JCTC that the of the collage thank you my friends
salma
Commplementary angles
hello
Sherica
im all ears I need to learn
Sherica
right! what he said ⤴⤴⤴
Tamia
hii
Uday
hi
salma
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a perfect square v²+2v+_
kkk nice
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Kim
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Al
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Kristine 2*2*2=8
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what's the easiest and fastest way to the synthesize AgNP?
China
Cied
types of nano material
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
what is nano technology
what is system testing?
preparation of nanomaterial
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
what is system testing
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
Hello
Uday
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
Prasenjit
can nanotechnology change the direction of the face of the world
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Read about ancient clocks like_ hour glass, water clock and sun dial for a quiz and hand on Activity in the class