3Thavo §7.5 Square root formulas

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§7.5 Square root formulas

Let's start this lesson by doing a bit together.

Write down in your Notebook:

'31a'  

and let's do this exercise together now.

32a and b together now

we'll skip 32 c and d

By the way, skipping is 

also what you see in this picture!

Next slide gives an explanation.

Boundary point = grenspunt

How to make a good table?

For exercise 33 -that you are going to do after this information-

you are going to make 2 Graphs (33b and d).

When you see that coming, then it is useful to make a 'double table', including 3 lines. Next slide shows this!

*  Here you see a 'double table'.

          (This saves you some time, because you can work out 

points for two Graphs in only one Table!)

* Copy this Table right now and get yoyr Calculator.

* Work out and fill in some of the outcomes.

* Soon we will compare our results!

Homework time - later we will continue this LessonUp.

Instruction: what is a boundary point?

This a boundary - een grens(lijn)

However, a boundary point is ... 

just a point.

In the case of a Root Graph it is the 

starting point (or the ending, 

if you like) of the Graph.

Boundary point under a manifying glass:

Next slide shows us....

how to Calculate the Boundary point, when a Root formula is given!

WE'll 36a (only) together now;

first try to find it yourself! 

Solution 36a:

So...

Work out 36, 37 and 38a in the same way!

If you forgot how to do this,

look back on p.263, for the 

Method (that was also in this LessonUp!). 

Homework time again.

Maybe you think Homework is Fun.

Still, make sure you do not have too much of it!

My opinion about this lesson: