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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

what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
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
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
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
hi
Loga
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 did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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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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