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Technology

Grade 5

Graphic communication

Module 5

Modern measuring instruments

Measure and draw with modern measuring instruments

Assignment 1:

Dimensions

[lo 1.3]

Measure the lengths in mm of the indicated line sections in the following sketch.

Which measuring-instrument is the most suitable?

Hint for the Teacher:

Allow a margin of ± 2 mm to both sides, but encourage learners to measure accurately all the same.

Background:

What is a line section?

The line sections used to compile the sketch above are mainly HORIZONTAL, VERTICAL, DIAGONAL (slanting) or CURVED.

What is a horizontal line?

What is a vertical line?

What is a diagonal line?

What is a curved line?

Assignment 2:

Look at the sketch at assignment 1 and answer the following questions

[lo 1.3]

  1. Write down the letters of any three horizontal lines in the sketch.
  2. How many diagonal lines are there in the sketch?
  3. Write down the letters of any two vertical lines in the sketch.
  4. Draw over the HORIZONTAL lines in red, the VERTICAL lines in blue and the DIAGONAL lines in green in the sketch.
  5. What kind of line is (k)? Can you measure the length of (k)?

How?

Assignment 3:

Drawing lines with instruments

[lo 1.3]

Using a ruler and the four kinds of lines, design and draw any object on squared paper.

Assignment 4:

Drawing of lines using instruments

[lo 1.8]

a. Draw a horizontal line of 50 mm with your ruler. Follow the instructions

  1. Draw a horizontal line across the page (about 150 mm).
  2. Make a little vertical mark on the left of the horizontal line.
  3. Place your ruler on the mark.
  4. Measure 50 mm and make a small vertical mark on the right.
  5. Write 50 mm under the measured line section.

b) Draw a diagonal line of 70 mm with your ruler. Follow the instructions given above.

Assignment 5:

Proportion

[lo 1.3]

Draw a line parallel to each of the following:

Background:

Complete: The point where two lines meet, is called a .The size of an angle is measured in DEGREES and we use a PROTRACTOR to measure the size of an angle.

When a vertical line meets a horizontal line perpendicularly, a __ is formed. The size of such an angle is 90 o .

A line section can also be called a STRAIGHT ANGLE. The size of such an angle is 180 o .

When an angle is between 0 o and 90 o , it is called an ACUTE ANGLE and when an angle is between 90 o and 180 o , it is called an OBTUSE ANGLE.

Assignment 6:

[lo 1.2]

Write down what kind of angle each of the following is:

Hint:

Turn the page so that one side of the angle is horizontal, and decide then.

Assignment 7:

Draw two examples of each kind of angle with your pencil or ruler.

[lo 1.3]

a. A right angle

b. An acute angle

c. An obtuse angle

Background:

If we combine certain line sections with the above-mentioned three angles, we get GEOMETRICAL FIGURES. They are also called two-dimensional shapes, because they are flat shapes or planes. Lines that are one-dimensional are used in drawings to form two-dimensional shapes or planes. Most two-dimensional figures have two dimensions, namely length and breadth.

Assignment 8:

[lo 1.2]

Can you recognise these basic geometrical figures?

Questions & Answers

How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
How can I make nanorobot?
Lily
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
how can I make nanorobot?
Lily
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
NANO
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Source:  OpenStax, Technology grade 5. OpenStax CNX. Sep 23, 2009 Download for free at http://cnx.org/content/col10979/1.2
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