3Tvwo (§ 5.2 and) § 5.3

• Wiskunde
• Middelbare school
• vwo
• Leerjaar 3

In this lesson we will:

• a. LOOK BACK shortly at:

                  § 5.2 Moving vertically, and

• b. DO:

             § 5.3 Multiplication

§ 5.2 Moving vertically

Notice:

• the new graphs have the same shape 
• as the old one
• the new graphs only lies higer or lower
• watch 'multiplication' in the next slide!

§ 5.3 Multiplication

Notice:

• The new grahs are different from the old:
• the new parabola is narrower.
• However, the points of intersection with the x-axis are 
• still the same!
• The new straight line has another direction from the old one.
• We go on with these graphs in the next slide!

LANGUAGE:

• We can say that 
• a graph is multiplied by a number, or
• a graph is 'stretched parallel to the y-axis'.

AND NOW:

KEY IN YOUR ANSWERS to the 2 questions

 on the next slides!

The highest green line is multiplied by ...... to get the lowest green line.

1. 1
2. 2
3. -0.5
4. -1

The widest parabola is multiplied by ....... to get the narrowest parabola.

1. 1/3
2. -3
3. 3
4. - 1/3

Humour lies on the street...

Is it time for a good joke already?

If so, ask your teacher.

When you have recovered ...

from these unforgettable joke, there is one more thing to explain.

 You will see this in the next slide!

Question: How to calculate        

the new FORMULA ?

      oh,bb                                                                                                                    AA                                                         Answer: study this example!

                                                          Notice the use of 

                                                              the BRACKETS !     

s

Classroom - Study square

You will remember the rule: 

up to 7.5    -    in Classroom

from 7.5 and higher   -   Study square

Situation after 4T CH 4:

Allowed to go to the Study Square:

Ruby, Jochem, Mette, Milou, Remco, Julie en Ferry.

ONE MORE POINT OF ATTENTION on next slide!

CHALLENGE PATH

Working on the Study square includes you do:

The CHALLENGE exercises of a paragraph !

So choose the CHALLENGE path every time!

WHY ? see next slide!

MATH B 

The Challenge exercises are more difficult and 

* give you an idea of Math B in 4th Form, and

* prepares you for a Profile choice that includes Maths B!

* of course also Classroomers are invited to try the Challenge

   exercises now and then!

Now let's all start doing the homework (= § 5.3).

Study square is open.

Time for a Joke?

What did you learn this lesson?