3AT Looking at probability and Circles

What would be the advantages of owning the same outfit 7 times?
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What would be the advantages of owning the same outfit 7 times?

Slide 1 - Question ouverte

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How many combinations can you make with your clothes?

Slide 2 - Question ouverte

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Today
Maths A or C : Start with §12A.1 and continue with §12A.2 on p. 212 and onwards. Make sure you finish §12A.1 before the end of the first lesson. 
Maths B : Take notes and start with §12B.1, p. 242 and onwards. 

Everyone : Check, adjust and update your planner before the end of the lesson. 

Slide 3 - Diapositive

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Hand in your work on exercise R4a on p. 240

Solve the equation 4(2x-1) + x = 14
timer
1:00

Slide 4 - Question ouverte

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Slide 5 - Diapositive

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§12B.1
  • Pythagoras' theorem
  • Exact answers
  • Radius
  • Coordinates
  • Equation
  • Show, explain, give, make or calculate
  • You may skip ex. 1 and 3

Start with ex. 2, 4, 5, 6 and 7. 
Continue with §12B.2 

Slide 6 - Diapositive

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§12A.1 and §12A.2
Any questions? 
Samples
Most important: 
- Is it reliable? 
-- Equal chance of being chosen
-- Is the sample large enough

Are you able to explain if a survey is carried out correctly?
Simulations
Important
- Can you find the button on your calculator? See 'pushpin' for pictures
- Exercise 11 <-- do you understand the difference? 
- Calculations and explanations
Calculator steps

Slide 7 - Diapositive

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Upload your work on ex. 5

Slide 8 - Question ouverte

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§12B.2, p. 246-248
Goal
- rearrange formula
- completing the square
rearranging
Write a formula in a different form by for instance adding, subtracting and dividing on both sides. In this chapter you do this by using 'completing the square' and adding/subtracting. 

completing the square

Slide 9 - Diapositive

§12B.2 | Do at least 9, 11 and 12

Continue working on C12 and/or skills
  • Set a goal for yourself (notation, number of exercises, asking questions, checking your work, focus, ......)

Slide 10 - Diapositive

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§12AB.3
Maths A or C: Start by checking your work and continue with §12A.3, p. 
Maths B: Take notes and continue with §12B.3, p. 250-252

Slide 11 - Diapositive

Maths B: at least 15, 16, 17 and 20 
Maths A or C: 15, 16 and 17

How can you find a point of intersection?

Slide 12 - Question ouverte

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What help do you need?
Goal
- rearrange
- substitute
- solve equations
- calculate point(s) of intersection of a circle and a line
Example finding the points

Slide 13 - Diapositive

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§12A.3, p. 220
  • How to predict a probability
  • Expectations <-> chance
  •  Calculations and explanations
Calculations
part/whole*100 = percentage 
or 

(number of specific results)/(number of total results)*100= percentage

Slide 14 - Diapositive

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Skills 4, 5 and 6 book B, p. 40-45 ; p. 122-127 ; p. 268-273.
Look at the contents on p. 4-5,
and write down one skill you need to practice.

Ratio, Calculations, Equations, Geometry, Functions and Graphs,
Statistics, Rearranging, Decimal numbers, Inequalities,
Square roots and powers.

Slide 15 - Carte mentale

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§12.4AB 
  • Maths B: Check your work and continue with §12B.4, p.  254
  • Maths A: Take notes and continue with §12A.4, p. 224

Everyone : Check, adjust and update your planner before the end of the lesson.  

Slide 16 - Diapositive

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Calculating probabilities

Slide 17 - Diapositive

Take a screenshot of slide 2 to see if they can answer the question
You have three trousers, five shiShirtsrts and two pairs of shoes. You randomly pick an outfit. What is the probability of picking your favorite outfit?

Slide 18 - Question ouverte

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Slide 19 - Diapositive

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§12B.4 
Intersect, touch or no points
Intersect --> 2 points --> D > 0
Touch --> 1 point --> D = 0
No points --> 0 points --> D < 0
Difficult?
See theory on p. 256. Do you need extra help? Make sure you ask a question and check your work after every exercise you made. 

Quadratic formula
a, b and/or c can be more than one term. What is the formula for instance when a = 4, b = 3k and c = k^2 - 7?

Slide 20 - Diapositive

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