3Thavo 12th ed. Ch 1

PROGRAM LESSON on Ch 1,  § 1.6: 
+ a Wordweb
+ doing a few exercises with the timer
+ follow the Solutions for these exercises and
+compare to your own results
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Slide 1: Slide
WiskundeMiddelbare schoolhavoLeerjaar 3

This lesson contains 13 slides, with interactive quiz, text slides and 1 video.

Items in this lesson

PROGRAM LESSON on Ch 1,  § 1.6: 
+ a Wordweb
+ doing a few exercises with the timer
+ follow the Solutions for these exercises and
+compare to your own results

Slide 1 - Slide

What did you learn?

Slide 2 - Mind map

DO:
exercises 40, p.30
ATTENTION: there is a mistake in it!
timer
3:00

Slide 3 - Slide

Slide 4 - Video

The mistake in 40:
In the 3rd line it says: 
'drops 0.03 degrees Celsius',
but this should be: 
'goes up 0.03 degrees Celsius'!
Please correct this with pencil(!) in your book.
timer
3:00

Slide 5 - Slide

Solution exercise 40:
a. At a depth of 200 metres the Temperature is 
20 + 0.03 x 200 = 26 degrees Celsius.
b. The formula for this mine is:
T = 20 + 0.03 x d

Slide 6 - Slide

Slide 7 - Slide

solution 40c:
For this mine also goes the same kinda formula:
T = b + 0.03 x d, but now with another outside temperature b.
Let us fill in (400, 30) in this formula!

Slide 8 - Slide

Slide 9 - Slide

Solution 40c:
(400, 30)   in   T = b + 0.03 x d      gives us:
30 = b + 0.03 x 400
30 = b + 12,  so
b = 18 , which is the outside temperature.

Slide 10 - Slide

Now do the other exercises.
ATTENTION:
the final exercises give you a good impression about Maths A and Maths B, next year!
That is why it is important that you do them all.

Slide 11 - Slide

Slide 12 - Slide

Slide 13 - Slide