Which exercises/theories should we discuss on the board?
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Slide 1: Woordweb
WiskundeMiddelbare schoolhavo, vwoLeerjaar 2
In deze les zitten 10 slides, met interactieve quiz en tekstslides.
Lesduur is: 50 min
Onderdelen in deze les
Which exercises/theories should we discuss on the board?
Slide 1 - Woordweb
From the homework
Make a multiplication table
negative x negative = positive
Slide 2 - Tekstslide
Make a multiplication table
Remember you are multiplying
the terms on the outside of the table!
Slide 3 - Tekstslide
So the answer was correct, only
the order was not what was asked!
Slide 4 - Tekstslide
Make a multiplication table
Remember the rules for multiplying negatives
Remember the rules for adding negatives and positives
Slide 5 - Tekstslide
Make a multiplication table
Remember the rules for multiplying negatives
Remember the rules for adding negatives and positives
Slide 6 - Tekstslide
Shortening formulas
By now, you know how to write formulas such as
y = 2a(3a-5) (see §5.1 and digital lvl 4 and 5)
y = (2a+5)(3a-10) (see §5.2 and digital lvl 6, 7, 8)
without brackets and as short as possible.
How can you write a formula such as
y = 2a(3a+4) + 7a -3a(2a-7)+(a-4)(2a-5)
without brackets and as short as possible?
Slide 7 - Tekstslide
Shortening formulas
When looking at the formula y = 2a(3a+4)+7a-3a(2a-7)+(a-4)(2a+5)
remember the order of operations!
The terms 2a(3a+4) and -3a(2a-7) (include the - sign, because terms are parts you ADD up) and (a-4)(2a-5) are all multiplications, and those go BEFORE adding and subtracting!
You should write each of these terms without brackets, place them back in the same place you found them and then write the formula as short as possible by combining like terms.
Slide 8 - Tekstslide
Shortening formulas
Slide 9 - Tekstslide
HW Tuesday
Make and correct §5.3 (book or iPad)
Send me the screenshots of the
digital exercises (lvl 4- lvl 8) you didn't do yet (by yourself)
Lesduur is: 50 min
