Chinesische Zahldarstellung

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Question statement

In der Tabelle unten sei eine Additionsaufgabe mit chinesischen Stäbchen-Zahlen dargestellt, bei der allerdings die farbige Unterscheidung positiver und negativer Zahlen fehlt.

	{image("resources/question-resources/"+h_rods[digits_1[0]])}	{image("resources/question-resources/"+v_rods[digits_1[1]])}	{image("resources/question-resources/"+h_rods[digits_1[2]])}	{image("resources/question-resources/"+v_rods[digits_1[3]])}	{image("resources/question-resources/"+h_rods[digits_1[4]])}
	{image("resources/question-resources/"+h_rods[digits_2[0]])}	{image("resources/question-resources/"+v_rods[digits_2[1]])}	{image("resources/question-resources/"+h_rods[digits_2[2]])}	{image("resources/question-resources/"+v_rods[digits_2[3]])}	{image("resources/question-resources/"+h_rods[digits_2[4]])}
{image("resources/question-resources/"+v_rods[digits_3[0]])}	{image("resources/question-resources/"+h_rods[digits_3[1]])}	{image("resources/question-resources/"+v_rods[digits_3[2]])}	{image("resources/question-resources/"+h_rods[digits_3[3]])}	{image("resources/question-resources/"+v_rods[digits_3[4]])}	{image("resources/question-resources/"+h_rods[digits_3[5]])}

Give any introductory information the student needs.

			Name	Type	Generated Value

h_rods	list	List of 10 items
v_rods	list	List of 10 items
digits_1	list	[ 9, 3, 4, 1, 8 ]
digits_2	list	[ 4, 2, 9, 0, 6 ]
number_1	number	93418
number_2	number	42906
no1	number	93418
no2	number	-42906
no3	number	50512
number_3	number	50512
digits_3	list	[ 0, 5, 0, 5, 1, 2 ]

Automatically regenerate variables?

Name

Data type

Value

xxxxxxxxxx
 
["c000.png","ch01.png","ch02.png","ch03.png","ch04.png","ch05.png","ch06.png","ch07.png","ch08.png","ch09.png"]

JME function reference

Description

Describe what this variable represents, and list any assumptions made about its value.

Can an exam override the value of this variable?

Generated value: `list`

[ "c000.png", "ch01.png", "ch02.png", "ch03.png", "ch04.png", "ch05.png", "ch06.png", "ch07.png", "ch08.png", "ch09.png" ]

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Statement

Parts

Gap-fill
1. Gap a Number entry
  Add
2. Gap b Number entry
  1. Alt bVZF
  Add
3. Gap c Number entry
  1. Alt cVZF
  Add

Gap-fill

Ask the student a question, and give any hints about how they should answer this part.

Angenommen, die Zahl in der ersten Zeile ist eine positive Zahl, wie lauten dann die Zahlen in den drei Zeilen?

Erste Zeile: a

Zweite Zeile: b

Dritte Zeile: c

Advice

Man entschlüsselt am besten zunächst die absoluten Werte der drei Zeilen, dass ergibt {number_1},{number_2} und {number_3}.

Anschließend wählt man die Vorzeichen so, dass $\var{number_1}+(\pm\var{number_2})=\pm\var{number_3}$ herauskommt.

Hier ergibt sich $\var{number_1}+(\var{no2})=\var{no3}$ herauskommt.

Give a worked solution to the whole question.

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Part	Test	Passed?
Gap-fill
Gap-fill		Hasn't run yet
Number entry
Number entry		Hasn't run yet
Number entry
Number entry		Hasn't run yet
Number entry
Number entry		Hasn't run yet

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Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

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Checkpoint description

Andreas Vohns 4 years, 4 months ago

Andreas Vohns 4 years, 4 months ago

Andreas Vohns 4 years, 4 months ago

Error in variable testing condition

Error

Warning

Generated value: `list`

Parts

Gap-fill

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Chinesische Zahldarstellung

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

Feedback

History

Comment

Checkpoint description

Andreas Vohns 4 years, 4 months ago

Andreas Vohns 4 years, 4 months ago

Andreas Vohns 4 years, 4 months ago

Error in variable testing condition

Error

Warning

Generated value: list

Parts

Gap-fill

Generated value: `list`