2Tvwo §6.3 again! (2)

• Wiskunde
• Middelbare school
• vwo
• Leerjaar 3

Doing §6.3 Applying the theorem...

was not an easy job, 

that's why we are going to look into some of the exercises more closely!

By the way, at the end of this LessonUp I have an explanation of

C3b, p.207, a pretty difficult Challenge exercise, 

for the ones who picked up this challenge!

First of all, 

+ you are going to VISUALISE some of the exercises from §6.3 in your

Notebook.

Any way.... 

+  Making SKETCHES for exercises in §6.3

+  helps you to 

+  make them more easily and correct.

+  So let's practice now!

Let's talk business now:

Make a sketch about exercise 17a, p.208 for me.

It's in the next slide!

Include the known measurements.

Open your Notebook and get a pen, pencil and a geo.

The sketch for 17:

Now make a sketch for exercise 18a, p.209. 

Make a sketch for 19, p.209

Sketch 20!

JOKE !

Sketch 22.

(This is no joke...)

After all this sketching,

+  Let's go through 2 more complicated Homework exercises.

+  Compare this to your own notes, in your Notebook.

+  If needed, correct, or add what you missed.

Before we look at the Solution,

realise that the best start is to make 

a SKETCH of the situation!

For this Task, we will make a good use of the

SKETCH you just made.

Question:

To make you THINK critically, here they inserted a piece of information that you don't need at all.

Which bit of information can we do without?

Answer is in the next slide.

The height: the barrel is 60 cm high.

Who cares?

Ed and Justin don't!

a The TOP VIEW.

What will it look like? How many grids for the width and length?

Study the picture once more. That's the key!

How the get the answer for b?

Think about it, try to guess what the next slide will reveal.

Questions:

a. Will this rope be shorter or longer than the previous one?

b. Which two measurements do we fill in in the Pythagoras Theorem this time? For this question we will go back two slides!

SOLUTIONS:

a. Will this rope be shorter or longer than the previous one? LONGER.

b. Which two measurements do we fill in in the Pythagoras Theorem this time? These two:

                                 and 70

√​72500​​​

Now...

 Do the Homework.

 + SUGGESTION: make C3b, p.207, from §6.2             

+ When you have finished I will show you the Solution of C3b.  This task is a real Challenge. So good practice!

C3b, p.207