Now that you've started to build an advanced assessment, you may want to add a Number line drag and drop question.

➡️ Need help getting started with Advanced Assessments? Click here

In a Number line with drag and drop question, the students drag points or images onto a number line.


Article Table of Contents:

Build the Question

If you are creating a new item, select the + Create button on the assessment builder, title the item, then select the Add New plus sign to add a question.

If you are adding to an existing item, simply select the Add New plus sign (as shown above) to add a question to the item.

Next, select the Graphing category from the options on the left, then select Number line with plot.

➡️ Step 1: Compose Question

  • Compose question: Type question prompt into this field.

You have many formatting options from the Rich Text toolbar, including changing the font size, adding tables, using math symbols, adding multimedia, and more! Click here for more information on the different functions of the Rich Text toolbar.

💡 Tip from the Otus Team: To enter and symbols, click '𝚺' for math symbols and then choose '<' from the drop down for the full set of inequality symbols:

➡️ Step 2: Determine Line Parameters

  • Immediately below where you compose question is the Line section where you can configure basic number line parameters.

  • Enter Minimum value and Maximum value for the number line

  • Enter a number line Title (optional)

➡️ Adjusting the Ticks and Labels

What if you need the number line to county by 0.5? What if you only want whole numbers labeled, but want the number line to show fourths? For these options, you'll want to adjust the Tick Distance and Frequency. See below to learn more.

  • Tick Distance: another way of saying "intervals". What value do you want the number line to "count by"? Examples:

    • Tick Distance is 1: the number line will count by ones.

    • Tick Distance is 2: the number line will count by twos.

  • Frequency: this is how you determine which ticks get a label. Examples:

    • Frequency is 1: every tick will be labeled.

    • Frequency is 2: every second tick will be labeled.

Default: The default settings are shown below. Let's use this as a guide to experiment with different options.

Example 1: Counting by halves, labels at each whole number.

  • Tick Distance: 0.5

  • Frequency: 2

💡 Quick Tip: want there to be labels at each half in this example? Change the Frequency to 1.

Example 2: Counting by fourths, labels at each whole number.

  • Tick Distance: 0.25

  • Frequency: 4

💡 Quick Tip: want there to be labels at each half in this example? Change the Frequency to 2.

Example 3: Counting by tenths, labels at each half.

  • Tick Distance: 0.1

  • Frequency: 5

💡 Quick Tip: want to remove the labels at the halves and only have labels at the whole numbers? Change the Frequency to 10.

Set Correct Answers and Scoring

➡️ Set Correct Answers

When setting the correct answers, you'll want to take the Snap to Ticks and Threshold options into consideration.

Snap to Tick:

  • See the example below: the number 5.5 needs to be placed on this number line. Notice how it only allows for the answer to be placed exactly on a tick.

  • If you disable the Snap to Tick option, the answer can be placed anywhere on the number line, not just on a tick.


  • If you disabled the Snap to Tick option, you will want to determine a Threshold; the amount of space around the correct answer that is allowed to be marked correct.

  • If you do not set a Threshold, the auto-scoring will likely not score as intended. The answer will be marked wrong unless it is at the exact position of the correct answer.

  • A generic threshold of 0.1 - 0.2, depending on your intervals, will usually do the trick.

  • In the example above, if the answer is placed within (plus or minus) 0.2 units of the correct answer, it will be considered correct.

➡️ Scoring

  • Step 1: Enter a point value in the Point(s) box. The default is 1.

  • Step 2: Determine the Scoring Type:

    • Exact match (Default): All parts of the answer must be correct to be awarded credit.

    • Partial Match Per Response: Each correct answer will be awarded the full credit designated in the Set correct answer(s) field. (In a question with three answers, awarding 1 point per correct answer, adding up to 3 total points).

    • Partial Match: Each correct answer will be awarded partial, proportional credit designated by the Set correct answer(s) field. (In a question with three answers, 1/3 point per correct answer, adding up to 1 total point).

Student Preview

It's highly recommended to Preview the question as you are building it. This displays the question as the students will see it and you can plot the lines to verify that the answers and scoring work as expected.

  • Step 1: Select the Preview button to go into Preview mode.

  • Step 2: Answer the question with the correct answers, including alternates.

    • Selecting Show Answers will present the correct answers.

  • Step 3: Verify that the auto-score correctly calculates the point value.

Here is a short clip of this question type from the student's perspective.

➡️ Want to preview the entire assessment? Click here for details.

More Options

Under the More options section you can set scoring type, formatting settings, and a number of other parameters for your question.

➡️ Other Scoring Options

  • Unscored/Practice usage: Removes all scoring from the question

  • Check answer button & Check answer attempts: Find more information here!

  • Enable auto scoring - If enabled, you will be required to choose a Scoring type; if disabled, the question must be scored manually

  • Penalty point(s): Students will lose points for incorrect answers (default is 0)

  • Minimum score if attempted: Students will receive points as long as the question has been attempted (if the question is left blank or is unanswered, the student will not earn those points)

➡️ Layout

  • These options customize the styling and layout of the number line.

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