3Thavo Ch8 or Ch10: REFRESH

Welcome ...

+ to this first Long distance Math Lesson
+ Thanks to the technical developments you can work on ...
+ by yourself, but also a bit together,
+ starting right now with this LessonUp!

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Slide 1: Tekstslide
WiskundeMiddelbare schoolhavoLeerjaar 3

In deze les zitten 18 slides, met interactieve quizzen en tekstslides.

time-iconLesduur is: 50 min

Onderdelen in deze les

Welcome ...

+ to this first Long distance Math Lesson
+ Thanks to the technical developments you can work on ...
+ by yourself, but also a bit together,
+ starting right now with this LessonUp!

Slide 1 - Tekstslide

Homework :
Math A: Ch 8  REFRESH    p.8/9
Math B: Ch 10 Refresh    p.82/83
Before you do this §, we will look at a few fine points.
We start with a short intro for the Math B pupils.
If you do Math A, please follow this too. 
It does not take long and you are ready when 'your slides' start.

Slide 2 - Tekstslide

Make sure you use the right materials (that you cannot forget now, being at home!):
+ pencil
+ pair of compasses
+ geo triangle

Slide 3 - Tekstslide


Question about these triangles on next slide!

Slide 4 - Tekstslide

Which statement is true?
A
A right-angled triangle can have an obtuse angle too.
B
An acute-angled triangle has 3 acute angles.
C
An obtuse-angled triangle has only one obtuse angle.
D
A triangle can be right-angled and obtuse-angled at the same time.

Slide 5 - Quizvraag

Slide 6 - Tekstslide

Math B students,
Good luck working out Ch 10 Refresh, p.82/83.
Now Math A's slides, about Refresh Ch 8, p.8/9, start!

Slide 7 - Tekstslide

Draw that 'frequency polygon', it says in R1b.
But ...
What is a frequency polygon ?!

Slide 8 - Tekstslide

What is a frequency polygon?
A
a kinda bar chart
B
a line that joins points from a table, in a graph
C
a graph, mostly time is included
D
has to do with 'News on Polygon'

Slide 9 - Quizvraag

frequency polygon:

Slide 10 - Tekstslide

one more time 'frequency polygon', 
going into the WORDS:
+ frequency: how often (frequent) something happens
+ polygon: a line drawn through points, taken from 
      a table

Slide 11 - Tekstslide

Calculating percentages:
a FreshenUp in a LessonUp
see next slide!

Slide 12 - Tekstslide

But ... it doesn't mean a thing, without some examples!
First with a 'ratio table'. Then with a 'factor'.

Slide 13 - Tekstslide

Slide 14 - Tekstslide

Slide 15 - Tekstslide

In R3d you are asked to make a 
frequency table ?!

Slide 16 - Tekstslide

Frequency table - an example:

Slide 17 - Tekstslide

Homework time.
+ Good luck doing REFRESH Ch8 or Ch 10.
+ When you are stuck and the Solutionsbook is not clear enough for you,
+ you may mail me and I will provide you with an explanation.
                                               ncf.hauwert@tabor.nl

Slide 18 - Tekstslide