This program uses the number line to help the student understand subtraction. For instance, if the problem is 9 - 3 = ?, the program will tell the student to click on the first number (9) and a yellow bar will highlight all the spaces on the number line up to the 9. The program will then tell the student to click on each of the next 3 numbers to the left of the 9. These 3 spaces will be highlighted in red, and will show that the answer to the problem is 6. After clicking on these two numbers, the student will be told to click on the Done button. This program subtracts only single-digit numbers.
Select Random Numbers
If this is selected, then the program will choose the numbers to be used in the problems.
Prompt with Blink
If this is selected, then student will helpful to choice the answer.
Display Numbers in Colors
If this is selected then the first number in the number statement will be displayed in yellow and the second number in red.
If this is selected then the verbal instructions given by the program voice will appear at the bottom of the screen.
This box is checked by default. This is available only for the “Training” mode. When this is checked, clicking the correct number invites a congratulatory animation. This animation runs for ten seconds. Click anywhere on the screen or press the space bar to stop the congratulatory animation.
If this is selected, then any and all of the numbers in this box will be used. To deselect this choice, click it again and selection will be ended.
Click on the “Back” button to close “Subtraction Using Number Line” or return to the previous page.