Taking Notes on Plato
Date -
Unit 1 Integers 1
Objectives:
1. define integers and graph them on a number line
2. compare the values of opposite, positive, and
negative integers on a number line
3. define and find absolute value
4. identify parts of a coordinate plane
5. define and graph ordered pairs
Write down the objectives of every lesson.
Read the lesson Introduction. Is
there any information that can
help you solve this type of problem
or better understand the
information in the lesson?
Yes – write it down
No – read it and move on
Integers on a Number Line –
1. Counting Numbers: 1, 2, 3, 4...
2. Whole Numbers: 0, 1, 2, 3...
3. Integers: ...-2, -1, 0, 1, 2...
4. Counting numbers are the set of whole numbers
beginning with the number one (1) and continuing to
infinity. Whole numbers are all of the counting
numbers and zero. Integers are whole numbers and
their negative opposites, including zero.
5. Positive integers are greater than zero, or
those numbers that are to the right of the zero
on a number line.
6. Negative integers are less than zero, or those
that are to the left of the zero on a number line.
7. The values on a number line increase from
left to right. The integer farthest to the left has
the lowest value, while the integer farthest to
the right has the highest value.
8. The distance between integers can also be
considered to be the difference between them.
Example 1:
What is the difference between -2 and 13?
First, draw a number line. Then, graph the numbers 2 and 13 using points. Count the spaces in between
the two numbers.
Since there are 15 units of space in between -2 and
13, the difference between the numbers is 15.
9. Negative integers are always written with the
negative sign.
10. Opposite integers on a number line are two
numbers that are the same distance away from
zero, but in different directions.
Example:
Graph 4 and its opposite on a number line.
Start at 0 and count 4 spaces to the right. Place
a point here for 4.
Absolute Value
1. Absolute value is the value of a number
regardless of its sign. Absolute value tells the
distance, in units, of any integer from zero. Since
distance is always positive (you cannot travel
negative miles, for example) absolute value is
always positive.
Keep writing at least one example of the
information given and any other key
terms/concepts that will help you on a test/quiz.