Post on 25-Feb-2016
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Notes to teachers(1):• On each slide, you will see a ‘student’s work’ and the ‘text book
answer’. Students should ask themselves: “How likely is it that the student is on track to get the right answer?”
• We are not interested in special cases.• We are not interested what the precise wording of the original question
may have been.• We are interested in equivalent expressions.• While the ‘student’ does not have exactly the same mathematical
expression as that presented in the ‘text book’, is their expression at least equivalent? It may not be in ‘simplest form’ but is it at least logically correct?
• We are interested in whether students can identify those cases where no amount of further rearrangement or simplification could result in identical expressions.
Notes to teachers (2):• Make sure each student has an answer sheet and pen or pencil.• Use the next 3 slides to explain the concept of the test to your students and get
them ready to do the practice questions. Click the mouse or press the right arrow key after each of these introductory slides.
• When you get to the ‘Practice Questions’ slide stress to students that– each question is shown for a only a few seconds – they should make a quick judgment and circle their response on the answer
sheet • Click the mouse or press the right arrow key to start the Practice Questions and
allow the slide show to proceed automatically until it stops at the ‘Get Ready to Begin’ slide
• When ready, click the mouse or press the right arrow key to start the Quiz and allow the slide show to proceed automatically until a ‘Short Break’ slide.
• You control the length of each ‘Short Break’. • When ready, click the mouse or press the right arrow key to move on to the
next set of automatic slides.
Algebraic Expectation Quiz
Middle Secondary Years
For each question in the Quiz you will see a student’s answer and the text book answer. Ask yourself
‘How likely do you think it is that the student’s answer is right?’
Example:
Student Text
3+2x 2x+3
Definitely Probably No idea Probably Definitelywrong wrong right right
This helps you see when
the slide changes
Student Text
(x+x)2 x2
Definitely Probably No idea Probably Definitelywrong wrong right right
Example
Practice Questions
• There are 3 practice questions.• You will see each question for only a few seconds. • Make a quick judgment about the student’s answer
Definitely Probably No idea Probably Definitely wrong wrong right right
• Circle your response on the answer sheet.
P1. Student Textbook
5x 5 x
P2. Student Textbook
yx 2 xy2
P3. Student Textbook
wl 22 )(2 wl
Get Ready to Begin!Algebraic Expectation Quiz
1. Student Textbook
x
x6
12 x2
xx
612 2
2. Student Textbook
3. Student Textbook
m5 5m
y1
31
y32
4. Student Textbook
5. Student Textbook
(a + p ) q q
pa
6. Student Textbook
tp
ts
tps
7. Student Textbook
gfgf 32 gf 25
8. Student Textbook
44 b
41 b
9. Student Textbook
2246 )ba( ba 26
A Short Break !
10. Student Textbook
yx 322
3
yx
11. Student Textbook
62 y 32 y
12. Student Textbook
a(a+1) 1+a2
13. Student Textbook
2s + 3 2t + 3
14. Student Textbook
2 3xx 5
15. Student Textbook
1 (2 5 )3
x y2 5
3x y
16. Student Textbook
cbxax 2 cxbxa
17. Student Textbook
2( )x 2x
A Short Break !
18. Student Textbook
a (b c) a b+ c
19. Student Textbook
(b+a)2 a2 + b2 +2ab
20. Student Textbook
( )j km
j km
21. Student Textbook
1x y
3( 1)x when
3( 2)y
22. Student Textbook
2 3( 1)n n 5 2n n
23. Student Textbook
( 2)( 1)x x 2 3x
24. Student Textbook
2 6x ( 2)( 3)x x
25. Student Textbook
p q ( )p q
Now a well earned rest!
Thank you!