# 1819 H2Y §3.2

Schedule
Today:              §3.2 in class (40 minutes), grades on Magister later today

Monday:         §3.3 & discuss test CH2 in class
Tuesday:        §3.4 in class
before the vacation!

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Slide 1: Slide
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This lesson contains 10 slides, with interactive quizzes and text slides.

Lesson duration is: 50 min

## Items in this lesson

Schedule
Today:              §3.2 in class (40 minutes), grades on Magister later today

Monday:         §3.3 & discuss test CH2 in class
Tuesday:        §3.4 in class
before the vacation!

#### Slide 1 -Slide

Recap: Opposite numbers

#### Slide 2 -Slide

Adding and subtracting square roots works the same as adding and subtracting like terms:

Calculate

3+3+3+3=
A
12
B
81
C
43
D
34

#### Slide 4 -Quiz

You cannot add up or subtract square roots with a different number under the square root sign. (In the same way you cannot add up different terms)

#### Slide 5 -Slide

Write as short as possible

y=x+5+x+7
A
y=2x+12
B
y=2x+5+7
C
y=2x+12
D
y=35x2

#### Slide 6 -Quiz

Writing expressions with addition and subtraction as short as possible with square roots works the same as with like terms.

#### Slide 7 -Slide

Write as short as possible

P=15a+6b+5a2b
A
P=20a+8b
B
P=24ab
C
P=20a+4b
D
cannot be written any shorter

#### Slide 8 -Quiz

Homework Monday
Make and correct §3.2 (support, standard or challenge)

#### Slide 9 -Slide

Any exercises from the HW or theory I should discuss on the board?