EXTENDING THE NUMBER LINE » quiz builder

goals:

• to find numbers in the numberline.
• accentuate the negatives and positives.
• add or subtract using the numberline.

vocabulary:

• number line: a straight line on which there is indicated a one-to-one correspondence between points on the line and the set of real numbers..
• negative number: a number found before the 0 in a number line.
• possitive number: a number found ater the 0 in a number line.
• extending: to stretch out.

to add using the number line

• locate the numbers on the number line
• the first number stays there but then you add moving to the right using the other number.
• count the espace you have until you dont have more numbers then the anwser will apear.

To subtract ing the number line:

• locate the numbers on the number line
• the first number stays there but then you subtract moving to the left using the other number.
• count the espace you have until you dont have more numbers then the anwser will apear

Examples:

• using a number line resolve this: -7+(-8)
  
• using a number line resolve this: 7-(-3)
  

check out this videos or more examples and task analysis

http://www.youtube.com/watch?v=ZxbXjORORSU

http://www.youtube.com/watch?v=RDw3Gq-heTw