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Tenint en compte les propietats de les potències, digues quines de les expressions següents són equivalents a <span class="nolink"><span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«msup»«mi»#a«/mi»«mi»#b«/mi»«/msup»«/math»</span></span>.
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One or multiple answers?
Multiple answers allowed
One answer only
Shuffle the choices?
Number the choices?
a., b., c., ...
A., B., C., ...
1., 2., 3., ...
i., ii., iii., ...
I., II., III., ...
No numbering
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Algorithm
Choice 1
Answer
«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«msup»«mfenced»«msup»«mi»#a«/mi»«mi»#c«/mi»«/msup»«/mfenced»«mi»#d«/mi»«/msup»«mo»·«/mo»«msup»«mi»#a«/mi»«mn»0«/mn»«/msup»«/math»
Grade
None
100%
90%
83.33333%
80%
75%
70%
66.66667%
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33.33333%
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20%
16.66667%
14.28571%
12.5%
11.11111%
10%
5%
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-11.11111%
-12.5%
-14.28571%
-16.66667%
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-66.66667%
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-83.33333%
-90%
-100%
Feedback
Molt bé. Si tenim una potència d'un potència, deixem la mateixa base i multipliquem els exponents. A més, en elevar un nombre a 0 el resultat és 1.
Choice 2
Answer
«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«msup»«mfenced»«msup»«mfenced»«mrow»«mo»-«/mo»«mi»#a«/mi»«/mrow»«/mfenced»«mi»#d«/mi»«/msup»«/mfenced»«mi»#c«/mi»«/msup»«/math»
Grade
None
100%
90%
83.33333%
80%
75%
70%
66.66667%
60%
50%
40%
33.33333%
30%
25%
20%
16.66667%
14.28571%
12.5%
11.11111%
10%
5%
-5%
-10%
-11.11111%
-12.5%
-14.28571%
-16.66667%
-20%
-25%
-30%
-33.33333%
-40%
-50%
-60%
-66.66667%
-70%
-75%
-80%
-83.33333%
-90%
-100%
Feedback
Molt bé. Com que la base negativa està elevada a un nombre parell, el resultat final serà positiu, per tant, és equivalent a escriure aquesta expressió amb la base positiva.
Choice 3
Answer
«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«msup»«mfenced»«mfrac»«mn»1«/mn»«msup»«mi»#a«/mi»«mi»#d«/mi»«/msup»«/mfrac»«/mfenced»«mrow»«mo»-«/mo»«mi»#c«/mi»«/mrow»«/msup»«/math»
Grade
None
100%
90%
83.33333%
80%
75%
70%
66.66667%
60%
50%
40%
33.33333%
30%
25%
20%
16.66667%
14.28571%
12.5%
11.11111%
10%
5%
-5%
-10%
-11.11111%
-12.5%
-14.28571%
-16.66667%
-20%
-25%
-30%
-33.33333%
-40%
-50%
-60%
-66.66667%
-70%
-75%
-80%
-83.33333%
-90%
-100%
Feedback
Molt bé. L'exponent negatiu inverteix la base i obtenim una potència d'una potència que és equivalent a l'expressió inicial.
Choice 4
Answer
«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«msup»«mi»#a«/mi»«mi»#c«/mi»«/msup»«mo»·«/mo»«msup»«mi»#a«/mi»«mi»#d«/mi»«/msup»«/math»
Grade
None
100%
90%
83.33333%
80%
75%
70%
66.66667%
60%
50%
40%
33.33333%
30%
25%
20%
16.66667%
14.28571%
12.5%
11.11111%
10%
5%
-5%
-10%
-11.11111%
-12.5%
-14.28571%
-16.66667%
-20%
-25%
-30%
-33.33333%
-40%
-50%
-60%
-66.66667%
-70%
-75%
-80%
-83.33333%
-90%
-100%
Feedback
Atenció, si tenim un producte de potències amb la mateixa base, sumem els exponents, no els multipliquem.
Choice 5
Answer
«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«msup»«mi»#a«/mi»«mi»#d«/mi»«/msup»«mo»:«/mo»«msup»«mi»#a«/mi»«mi»#c«/mi»«/msup»«/math»
Grade
None
100%
90%
83.33333%
80%
75%
70%
66.66667%
60%
50%
40%
33.33333%
30%
25%
20%
16.66667%
14.28571%
12.5%
11.11111%
10%
5%
-5%
-10%
-11.11111%
-12.5%
-14.28571%
-16.66667%
-20%
-25%
-30%
-33.33333%
-40%
-50%
-60%
-66.66667%
-70%
-75%
-80%
-83.33333%
-90%
-100%
Feedback
Atenció, si tenim un quocient de potències amb la mateixa base, restem els exponents, no els multipliquem.
Choice 6
Answer
«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«msup»«mfenced»«mrow»«mo»-«/mo»«msup»«mi»#a«/mi»«mi»#d«/mi»«/msup»«/mrow»«/mfenced»«mi»#c«/mi»«/msup»«/math»
Grade
None
100%
90%
83.33333%
80%
75%
70%
66.66667%
60%
50%
40%
33.33333%
30%
25%
20%
16.66667%
14.28571%
12.5%
11.11111%
10%
5%
-5%
-10%
-11.11111%
-12.5%
-14.28571%
-16.66667%
-20%
-25%
-30%
-33.33333%
-40%
-50%
-60%
-66.66667%
-70%
-75%
-80%
-83.33333%
-90%
-100%
Feedback
Atenció, la base negativa no està elevada a un nombre parell i, per tant, el resultat final serà negatiu. L'expressió inicial té resultat final positiu.
Choice 7
Answer
Grade
None
100%
90%
83.33333%
80%
75%
70%
66.66667%
60%
50%
40%
33.33333%
30%
25%
20%
16.66667%
14.28571%
12.5%
11.11111%
10%
5%
-5%
-10%
-11.11111%
-12.5%
-14.28571%
-16.66667%
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-33.33333%
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-50%
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-66.66667%
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-80%
-83.33333%
-90%
-100%
Feedback
Choice 8
Answer
Grade
None
100%
90%
83.33333%
80%
75%
70%
66.66667%
60%
50%
40%
33.33333%
30%
25%
20%
16.66667%
14.28571%
12.5%
11.11111%
10%
5%
-5%
-10%
-11.11111%
-12.5%
-14.28571%
-16.66667%
-20%
-25%
-30%
-33.33333%
-40%
-50%
-60%
-66.66667%
-70%
-75%
-80%
-83.33333%
-90%
-100%
Feedback
Choice 9
Answer
Grade
None
100%
90%
83.33333%
80%
75%
70%
66.66667%
60%
50%
40%
33.33333%
30%
25%
20%
16.66667%
14.28571%
12.5%
11.11111%
10%
5%
-5%
-10%
-11.11111%
-12.5%
-14.28571%
-16.66667%
-20%
-25%
-30%
-33.33333%
-40%
-50%
-60%
-66.66667%
-70%
-75%
-80%
-83.33333%
-90%
-100%
Feedback
Combined feedback
For any correct response
For any partially correct response
Options
Show the number of correct responses once the question has finished
For any incorrect response
Settings for multiple tries
Penalty for each incorrect try
100%
50%
33.33333%
25%
20%
10%
0%
Hint 1
Hint text
Options
Clear incorrect responses
Show the number of correct responses
Hint 2
Hint text
Options
Clear incorrect responses
Show the number of correct responses
Created / last saved
Created
by
Admin User
on
Monday, 15 July 2013, 9:11 AM
Last saved
by
Admin User
on
Monday, 15 July 2013, 9:11 AM
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