Se muestran los artículos pertenecientes a Septiembre de 2018.

## 4ESO Mates Flex III, 2018-2019 : Article 1 , Unitat 1

Publicado: 13/09/2018 19:22 por easyfisquim en 4ESO Mates 2018-2019

- Unitat 1a :  Nombres reals i percentatges.

Pics :    1          2          3          4          5          6          7          8          9

10       11        12        13        14        15        16        17        18

19       20        21        22        23        24        25        26

pags :   ex 18 pag 14
ex 20 pag 14
ex23  pag 15

## 4ESO FQ English 2018-2019. Unit 1 MOTION. Article 1.

Publicado: 13/09/2018 19:57 por easyfisquim en 4ESO FQ (10th gr Science) 2018-2019

UNIT 1 :    MOTION

SECTION 1 , LESSON 1,  MRU.
( Moviment rectilini uniforme, Linear straight uniform motion ).

* Exercises wordings of whole UNIT 1  :    1      2      3      4      5      6      7

8      9    10    11    12

> Solutions to exercices 30 to 3233 , 34 and 35.

> Solution of ex3 from section 2 :   solution

-  Subject introduction, units, class organization and working class issues.

PHYSICS CLASSROOM WEBSITE.

SCAFF 1 :  This file provides you with enough vocabulary to explain what
is this subject going about. Use it and write down a couple of

- How to say "entregar un trabajo" :

to turn in or hand in something, such as a school assignment, paper, etc., to someone. They were told to pass their papers in to the teacher.

- How to say "pasa estos papeles o hojas a los demás" :

Speed :  Just as distance and displacement have distinctly different meanings (despite their similarities), so do speed and velocity. Speed is a scalar quantity that refers to "how fast an object is moving." Speed can be thought of as the rate at which an object covers distance. A fast-moving object has a high speed and covers a relatively large distance in a short amount of time. Contrast this to a slow-moving object that has a low speed; it covers a relatively small amount of distance in the same amount of time. An object with no movement at all has a zero speed.

Velocity :  Velocity is a vector quantity that refers to "the rate at which an object changes its position."
Velocity is a vector quantity. As such, velocity is direction aware. When evaluating the velocity of an object, one must keep track of direction. It would not be enough to say that an object has a velocity of 55 mi/hr. One must include direction information in order to fully describe the velocity of the object. For instance, you must describe an object’s velocity as being 55 mi/hr, east. This is one of the essential differences between speed and velocity. Speed is a scalar quantity and does not keep track of direction; velocity is a vector quantity and is direction aware.

Velocity is a vector expression of the displacement that an object or particle undergoes with respect to time .

The standard unit of velocity magnitude (also known as speed ) is the meter per second (m/s). Alternatively, the centimeter per second (cm/s) can be used to express velocity magnitude.

- Write down now at your workbook or binder the difference between speed and velocity. Just try to use your own words to highlight the difference. Use the following scaff 2 exercise to get some expressions in order to write down the difference between speed and velocity.

SCAFF 2 File providing expressions to say the difference between two
concepts or issues.

- What position is :

Position is a place where someone or something is located or has been put. In physics, position is usually a number on an axis.
Position is a vector, because direction matters. But distance is a scalar. Distance is how far you’ve traveled. In order to know the posicion an object takes we need a fixed frame of reference to compare different points or spots,  starting point with final point.

- Frame of reference 1.

- Frame of reference 2.

- Reference frame video.

- Video about what position is.

- As homework or for you to review these concepts, just check the following link at home, watch the videos and rewrite the main issues on your workbook or binder :

Link to review position, distance and displacement.

SCAFF 3 :         Vocabulary 1 activity. ( Solution ).
Different ways to say getting a solution.

- We correct exercise 1 from page 17 (homework).

-  We’re considering now 3 important issues related to motion. Just discuss

a) Read the first paragraph on page 17 and write down in your notebook why
it says movement is relative.

b) Read the second paragraph on page 17 and explain why  mobile is called
point mobile.

c)  Read paragraph 2.1 on page 17. What is a trajectory?
Draw a few examples.

A trajectory is the path a moving object follows through space as a function of time.

- Do now exercises 2 and 3 from page 19.
Remember that :

Displacement is a vector quantity that refers to "how far out of place an object is";
it is the object’s overall change in position.

Distance is a scalar quantity that refers to "how much ground an object has covered"                                during its motion.

Position of someone or something is the place where they are in relation to other                                        things.

* Today we:

- Now you do exercises 4 and 5 on page 21.

SCAFF 4 File providing vocabulary and expressions to explain the main
parts of a graph or talk about what graphs are showing.
Do the exercise suggested in this scaff 4 activity.

- Now you do exercises 6 and 7 on page 22.

- Do now exercises 33 on page 32,   and 34, 35 and 40 on page 33.

Check this link to wath an animation about how 2 mobiles meet and cross each
other.

- Next you are gonna have here a bunch of links to review some of the issues done until now:

( solve for it = despejar la x ( solve for x ) … o lo que sea )

- More meeting point exercises to practice:

2) Additional MRU crossing and chasing mobiles exercises :

- Now at the end of this unit you can check next some other activities the students from previous school years did about MRU :

-  MRU 1
-  MRU 2
-  MRU 3
-  MRU 4
-  MRU 5
-  MRU 6
-  MRU 7
SCAFF 5b MRU 8
-  MRU 9
-  MRU 10
-  MRU 11
-  MRU 12
-  MRU 13
-  MRU 14
-  MRU 15
-  MRU 16
-  MRU 17
-  MRU 18