FUNCTIONS Those strange machines FUNCTIONS Those strange machines

FUNCTIONS: Those strange machines

FUNCTIONS: Those strange machines Optional Subject 3 r ESO Mathematics and English

Imagine a machine that, if we enter a number, it gives us another number: 5 12 2/3 π 0’ 75 7

Imagine a machine that, if we enter a number, it gives us another number: 5 12 2/3 π 0’ 75 7 Underlying this idea there is a very important Mathematical object, named “FUNCTION”

FUNCTIONS are present in lots of situations, not only in Mathematics, but also Physics, Chemistry, Technology…

In this Credit, and with the help of the “machine idea” we will learn the different aspects of the Mathematical functions… 15 km/hr 3 hr 45 km x f(x) 0 0 1 15 2 30 3 45 4 60 distance (km) 100 50 5 10 time (hr)

… and we will study the characteristics of some important functions.

And we will do all these through…

ENGLISH

In this Optional Subject: Ø The materials are in English

In this Credit: Ø The materials are in English Ø The teacher will speak English

In this Optional Subject: Ø The materials are in English Ø The teacher will speak English ØYou will speak English

DON’T PANIC!

We will have dictionaries The teacher will speak very slowly

Mathematics vocabulary is very similar in English and Catalan funció gràfica taula de valors function graph table of values And Mathematics notation is the universal language!

But, what are we studying, English or Maths?

MATHS!

But we all will learn English, as well