記述問題タイプ
作成中です - Mitsuhiro Yoshida 2008年5月6日 (火) 20:41 (CDT)
記述問題では、問題 (イメージを含む場合もあります) に対して、解答者が言葉またはフレーズを入力します。答えは、大文字小文字の区別をすることもできます。答えは、言葉またはフレーズにすることができますが、あなたの受け入れることのできる答えの1つに厳密に合致する必要があります。フレーズが異なるため正解できないということ避けるため、入力する必要のある答えを可能な限り短くすることをお勧めします。
小テストおよびレッスンモジュールには、両者とも記述問題タイプがあります。問題の分析は、両方のモジュールで利用できます。しかし、小テストで利用できない分析タイプをレッスンでは利用できます。 (下記、レッスンモジュールメモをご覧ください).
記述問題を作成するには: 記述問題を作成するには:
- 記述問題に説明的な問題名を付けてください。
- 問題テキストを作成してください。あなたがHTMLエディタを使用している場合、ワードプロセッサのドキュメントのように問題の体裁を整えることができます。
- ヒント: 問題がギャップを埋めることを目的としている場合、どこがギャップか示すため、アンダースコア ( _ ) を使用してください。
- あなたが問題に写真を追加したい場合、表示する画像を選択してください (詳細は、多肢選択問題 > 問題セットアップのステップ4をご覧ください。
- 「評点のデフォルト値」を設定してください (例 この問題の最大評点)。
- 「ペナルティ要素」を設定してください (下記ペナルティ要素をご覧ください)。
- Moodle 1.7以降: 「全般に対するフィードバック」を追加することができます。このテキストは、小テストの解答後、受験者に表示されます。
- 答えに対して「大文字小文字の区別」をするかどうか選択してください。「大文字小文字の区別」では大文字が重要になりますので、気をつけて使ってください。Will you accept george washingtion as well as George Washington as an answer?
- Next, fill in the answers you will accept. You could give common misspellings partial credit with this option. If the "Case sensitive" option is selected, then you can have different scores for "Word" or "word". Use wildcards to allow for variants on a word.
- Add grade for each answer.
- Create feedback for any and all answers. This will appear if the student enters that answer.
- Note: It is good practice to add a single wild card * for the last answer, so you can create a feedback response and a score for all other answers students might have.
- 問題をカテゴリに追加するには、「変更を保存する」ボタンをクリックしてください。
ペナルティ要素
The 'penalty factor' only applies when the question is used in a quiz using adaptive mode - i.e. where the student is allowed multiple attempts at a question even within the same attempt at the quiz. If the penalty factor is more than 0, then the student will lose that proportion of the maximum grade upon each successive attempt. For example, if the default question grade is 10, and the penalty factor is 0.2, then each successive attempt after the first one will incur a penalty of 0.2 x 10 = 2 points.
ワイルドカードの使用
You can use the asterisk character (*) as a wildcard to match any series of characters. For example, use ran*ing to match any word or phrase starting with ran and ending with ing. If you really do want to match an asterisk then use a backslash like this: \*
If you want one question with the two answers fuel and oxygen, you ought to be able to limit the number of variants by writing fuel*oxygen 100%. This would accept "fuel oxygen", "fuel, oxygen", "fuel; oxygen", "fuel and oxygen", "fuel & oxygen" "fuel oxygen", "fuel und oxygen" "fuel&&oxygen". It would even accept "fuel or oxygen", "fuel but not oxygen" "fuel|oxygen" which might not be so good but you can never be completely safe!
Here are some answers and scores for a question "What does a rocket burn?".
oxygen*fuelwith a score 100%*fuel*with a score 50%*oxygen*with a score 50%*air*with a score 40%*with a score of 0%
The order of the answers is important. The answers are evaluated from 1st to last. When a match is found the process stops. If no match is found the question is scored wrong and the general response is used. It is a good practice to put a wild card as the last answer so the evaluation process knows what to do when nothing above it matches.
Without wildcards, the answers are compared exactly, so be careful with your spelling!
誤答に対するフィードバック
When you wish to have short answer type questions, you naturally have a limited number of variations that would be acceptable. So in case you wish to give a feedback in case of a wrong answer, you must spell out the right answers exactly and then use * as a final answer which will have grade as zero, and feedback will be the one for wrong answer.
Effectively, ANYTHING other than the specific answers mentioned by you will be treated as this option due to wildcard and will be deemed wrong; it'll give 0 marks and show the feedback for a wrong answer.
Here is an example:
What is a rabbit?
answer1: animal
feedback: right
grade: 100%
answer2: mammal
feedback: right
grade: 100%
answer3: vertebrate
feedback: right
grade: 100%
answer4: *
feedback: ouch! that was wrong
grade: none
Remember: you cannot do negative marking in this type and ANYTHING other than your right answer will be treated as option 4 due to the wildcard and given that feedback and zero marks.
ヒント: あなたの問題のプロトタイプを作成する
You may like to prototype your short answer questions to catch common acceptable answers you hadn't thought of. Start out by creating a few acceptable answers, then include the question in a quiz for no points. Be sure to tell students you are testing a new question. Once the quiz is over, review students' answers and add their acceptable answers to the list.
レッスンモジュールメモ
Moodle 1.6
Starting with Moodle 1.6 in the Lesson module, there are two different student answer analysis systems available for the Short Answer type of question: the simple system is used by default. The second type only available in Lesson Module is called "Regular Expressions". See Short answer analysis for a description of the new type, with examples.
