In this nine-minute video, the instructor uses software to review how to add and subtract negative numbers. The instructor also uses a number line. The video is suitable for elementary students. (09:15)

In this video they are showing how to add negative numbers. The first thing they do is to show how to do this using the number line. They show many different examples,some of the examples contain negative numbers. Video is good quality and good for a...ll students as review or initial learning of the concept. (07:02)[more]

In this video, students form a number line containing positive and negative numbers with each student holding a poster containing a number. The students demonstrate how to add and subtract integers using a number line. (01:29)

Adding and subtracting negative numbers can be confusing. Using a number line and some "real world" examples, a math teacher makes it easier to work with negatives. The instructor uses a white board to model examples. Sound quality needs improvement.... (09:50)[more]

The video starts with a review of general subtraction. Using the commutative property for addition they show how a + b = b + a, then they move into subtraction. When you subtract and you get a negative, you need to add more to the negative number to ...get the same answer. For example 7 - 2 = 9, so 7+ (-2) = 5 and 7 - 2 = 5, it is discussed what is the same in the last two equations. Adding a -2 is the same as subtracting 2. Other problems are then done. The video is good quality and good for all students as review or initial learning of the concept. (06:29)[more]

This is a video that demonstrates how to add negative numbers. It is done in a slightly humorous way. One advantage of this video is that it displays a number line when the math problems are being explained so that viewers can see how negative numb...ers are added.[more]

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