directed number

directed number

[də′rek·təd ′nəm·bər]
(mathematics)
A number together with a sign.
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Eagle 2 also directed number three and four to take spacing, ensuring safe separation from number one as he recovered his aircraft from an unusual attitude.
The concepts required to understand directed number traditionally have proven very difficult for many students, and equally difficult for teachers to find a way to present the materials.
Teachers regularly revisit the plethora of different aids to teaching directed numbers and operations, with everyone convinced that their method is the best approach
The students were learning about Directed Numbers, something they often struggle with and a topic where I find it hard to explain using real life situations when using addition and subtraction.
I began the lesson by asking students to say anything they remembered about directed numbers.
I explained to them that they had been using a model that would help them understand the thinking they would be doing in the next few lessons on adding and subtracting directed numbers.
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