Number Line

Basic Number Line Operations

Using a Number Line sticky note lets you plot points and draw lines (line segments, rays, straight lines) on the number line in the drawing area.

• Drawing Area
  
  Line　Number Line　Point

• To draw a line or plot a point

1. Click in the sticky note menu.
   
   This creates a Number Line sticky note and displays the drawing area and tool palette.
   
2. To draw a line, click or on the tool palette.
3. Click anywhere on the number line.
   This sets the coordinates on one side.
   
4. Click another location on the number line.
   This sets the coordinates on the other side and draws a line segment.*
   
   *　A ray or straight line may be drawn, depending on the draw settings. See “To configure line drawing settings”.
5. To draw a point, click on the tool palette.
6. Click anywhere on the number line.
   This will plot a point on the location where you clicked.
   

• To configure point plotting settings

To change the type of dot drawn, click ▼ below on the tool palette and use the menu that appears.

(1) Plots filled dots (●).
(2) Plots unfilled dots (〇).

• To configure line drawing settings

To change the type of start point and end point for a drawn line, click ▼ below and on the tool palette and use the menu that appears.


(1) Plots a filled start point (●).
(2) Plots an unfilled start point (〇).
(3) Selecting this and (4) or (5) will draw a ray with (4) or (5) as the start point and a point at infinity as the end point.
　 Selecting this and (6) will draw a straight line with a point at infinity as the start and end points.
(4) Plots a filled end (or start) point (●).
(5) Plots an unfilled end (or start) point (〇).
(6) Plots a point at infinity as the end point (→).

Moving a Point or Line

• To move a point

1. Click the Number Line sticky note to select it.
2. Click on the tool palette.
3. Select the point you want to move by clicking it.
4. Drag the point to the desired position on the number line.

• To move a line

1. Click the Number Line sticky note to select it.
2. Click on the tool palette.
3. Select what you want to move by clicking it.
   To move one end of the line (● or ○ only), click the ● or ○ to select it.
   To move a line segment, ray, or straight line, click the line you want to move to select it.
4. Drag the point to the desired position on the number line.

Deleting a Point or Line

1. Click the Number Line sticky note to select it.
2. Click on the tool palette.
3. Click the point or line you want to delete.
   You can continue clicking other points or lines to delete them.
   
   MEMO
   Selecting multiple points and/or lines and then clicking will delete all of them.

Zooming the Draw Area

1. Click the Number Line sticky note to select it.
2. Move the mouse pointer to the location you want to zoom.
   
3. Rotate the scroll wheel of your mouse to zoom the drawing area.
   
   Zoom in
   
   Zoom out
   
   MEMO
   If you are using a tablet, you can zoom by pinching in or out.
   Clicking on the tool palette adjusts the display so drawn points and lines fit within the window.
   
   To return to the default drawing area, click on the tool palette.

Panning the Draw Area

1. Click the Number Line sticky note to select it.
2. Click on the tool palette.
3. Drag the drawing area to pan.
   
   MEMO
   To return to the default drawing area, click on the tool palette.

Resizing a Number Line Sticky Note

You can resize a Number Line sticky note by dragging the in the bottom-right corner of the sticky note. Resizing the Number Line sticky note does not alter the range of the number line.

Reconfiguring a Number Line Sticky Note

1. Click the Number Line sticky note to select it.
2. Click .
   
3. Change the settings for the Number Line sticky note.
   On the menu that appears, configure the settings below.
   
   Fill color: Specifies the background color of the Number Line sticky note.
   Range: Specifies the drawing range of the number line as values on the x-axis.
   π: Toggles the scale on the number line between decimal and π. Selecting this checkbox displays the π scale.
   
   Decimal scale
   
   π scale
   
   Snap to grid: When you drag a point (or the end point of a line segment) around, this specifies whether the item you move snaps to a position on the grid scale. Selecting this checkbox snaps points to the grid.