<< Chapter < Page Chapter >> Page >


Grade 5

Discovering structures

Module 10

Introduction to structures


Any object is a structure of some kind. Consult the dictionary to find the meaning of the word and write it down.

Assignment 1

What are structures used for?

Write down the answers in your workbook or on a sheet of paper : (Select from the following possibilities: bridge, a room, basket, cardboard box for apples, bookshelf)

A structure: a) contains objects, e.g. _ and/or

b) protects objects, e.g. _ and/or

c) supports objects, e.g. _ and/or

d) encloses space, e.g. _ and/or

e) stretches, over a distance, e.g. _

[LO 2.1]

A house is a structure that performs all the above functions. It contains furniture, protects its inhabitants and their possessions, supports the roof, encloses space and covers a certain area or surface.

Assignment 2

A structure must be able to support its own weight, as well as the mass that it has to carry, while still retaining its shape. A mass can be an object, a person, or a force. What is the mass in each of the following examples?

[LO 2.1]

Assignment 3

How forces influence structures

What influence does a force have on a structure? Copy the complete sentence in your workbook or on a sheet of paper and supply the missing words.

  1. It _ move objects.
  2. It _ objects to move.
  3. It changes the _ of movement.
  4. It changes the _ of movement.
  5. It changes the _ of objects.

[LO 2.1]

Assignment 4

The influence of a force is not always visible.

What are the causes of the main forces influencing parts of structures? Copy the senctences and supply the missing words (See assignment 2).

  1. The _ that are brought to bear on the structure.
  2. The _ of the structure itself.

[LO 2.1]

Assignment 5

Which two forces influence structures? Copy the sentence and supply the missing words:

  1. _ compresses part of a structure, attempting to push the sides closer together.
  1. _ stretches part of a structure, trying to separate parts from each other.

We say that part of the structure is in a _ or _ form.

The poles are compressed,or pressure is exerted.

The walls of the house are compressed, or pressure is exerted.

The chains of the swing are pulled,or pressure is exerted.It is called a tensile force.

The long chain and the two shorter links of this signboard are pulled,

or pressure is exerted.It is called a tensile force.

[LO 2.1]

Assignment 6

A force that affects a structure, may cause the parts of the structure to collapse or lose its shape. Now copy the following sentences and supply the missing words:

A part’s resistance to a change of its shape, depends on

a) the _ of which it is made,

b) its _

c) its _

d) and the _ in which you try to bend it.

Structures should be _ , _ and _ so that it will not collapse or overturn when you place any kind of mass upon it.

[LO 2.1]

Assignment 7A

Let’s investigate the vertical strength of shell structures:

Note to the teacher:

Divide the class into groups. Provide each group with six A4 Manila’s of the same thickness, a can containing some nails, and a piece of flat, sturdy cardboard measuring 10 cm by 10 cm.

Questions & Answers

what is the coefficient of -4×
Mehri Reply
the operation * is x * y =x + y/ 1+(x × y) show if the operation is commutative if x × y is not equal to -1
Alfred Reply
An investment account was opened with an initial deposit of $9,600 and earns 7.4% interest, compounded continuously. How much will the account be worth after 15 years?
Kala Reply
lim x to infinity e^1-e^-1/log(1+x)
given eccentricity and a point find the equiation
Moses Reply
12, 17, 22.... 25th term
Alexandra Reply
12, 17, 22.... 25th term
College algebra is really hard?
Shirleen Reply
Absolutely, for me. My problems with math started in First grade...involving a nun Sister Anastasia, bad vision, talking & getting expelled from Catholic school. When it comes to math I just can't focus and all I can hear is our family silverware banging and clanging on the pink Formica table.
I'm 13 and I understand it great
I am 1 year old but I can do it! 1+1=2 proof very hard for me though.
Not really they are just easy concepts which can be understood if you have great basics. I am 14 I understood them easily.
find the 15th term of the geometric sequince whose first is 18 and last term of 387
Jerwin Reply
I know this work
The given of f(x=x-2. then what is the value of this f(3) 5f(x+1)
virgelyn Reply
hmm well what is the answer
If f(x) = x-2 then, f(3) when 5f(x+1) 5((3-2)+1) 5(1+1) 5(2) 10
how do they get the third part x = (32)5/4
kinnecy Reply
make 5/4 into a mixed number, make that a decimal, and then multiply 32 by the decimal 5/4 turns out to be
can someone help me with some logarithmic and exponential equations.
Jeffrey Reply
sure. what is your question?
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
I'm not sure why it wrote it the other way
I got X =-6
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?
is it a question of log
I rally confuse this number And equations too I need exactly help
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
Commplementary angles
Idrissa Reply
im all ears I need to learn
right! what he said ⤴⤴⤴
greetings from Iran
salut. from Algeria
what is a good calculator for all algebra; would a Casio fx 260 work with all algebra equations? please name the cheapest, thanks.
Kevin Reply
a perfect square v²+2v+_
Dearan Reply
kkk nice
Abdirahman Reply
A soccer field is a rectangle 130 meters wide and 110 meters long. The coach asks players to run from one corner to the other corner diagonally across. What is that distance, to the nearest tenths place.
Kimberly Reply
Jeannette has $5 and $10 bills in her wallet. The number of fives is three more than six times the number of tens. Let t represent the number of tens. Write an expression for the number of fives.
August Reply
What is the expressiin for seven less than four times the number of nickels
Leonardo Reply
How do i figure this problem out.
how do you translate this in Algebraic Expressions
linda Reply
why surface tension is zero at critical temperature
I think if critical temperature denote high temperature then a liquid stats boils that time the water stats to evaporate so some moles of h2o to up and due to high temp the bonding break they have low density so it can be a reason
Need to simplify the expresin. 3/7 (x+y)-1/7 (x-1)=
Crystal Reply
. After 3 months on a diet, Lisa had lost 12% of her original weight. She lost 21 pounds. What was Lisa's original weight?
Chris Reply
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get the best Algebra and trigonometry course in your pocket!

Source:  OpenStax, Technology grade 5. OpenStax CNX. Sep 23, 2009 Download for free at http://cnx.org/content/col10979/1.2
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Technology grade 5' conversation and receive update notifications?