Download Comparing and Ordering Integers

Comparing and Ordering Integers
R. Atkinson
7th Grade Math
Day 2
Period:
Date:
Approximate time:
50 minutes
OBJECTIVE:
TSW compare and order integers. (DOK 2, 1h)
MATERIALS:
pencil and paper, dry erase markers, transparencies, wet erase markers, overhead, worksheets
Warm Up: (5 min)
1. 25- 5/1 + 4 – 3
2. 10/2 -35 + (9-7)
3. 11 + (27/ 9)^2 * 4
4. 87- (36-11) * 3 +9
SET: (2 min)
Last class we learned about order of operations (PEMDAS) and the importance of maintaining that
order when solving these type of problems. Today, in this lesson, you will compare and order integers.
PROCEDURES:
A. Vocabulary: Integers are the set of whole numbers, their opposites, and zero. Negative integers are
less than 0. Positive integers are greater than 0. Zero is neither negative nor positive. On the number
line, negative integers are to the left of 0 and positive integers are to the right of 0. The distance from 0
on a number line is called absolute value. The absolute value of both -3 and 3 is 3, so therefore they
are equal. (3 min)
B. Teacher will draw a number line from -10 to 10. When comparing and ordering integers, the
number in the number line shows that any positive integer is greater than any negative number. (3 min)
C. Example 1 ( 9 min)
Compare the following set of integers.
- 10 and 0,
7 and -4,
-1 and 10,
-5 and -3
**When comparing negative integers, the integer with the largest place value has the lowest
value. For example, the integer -100 has a larger place value than -50, so -100 is more negative
than, or less than, -50.
D. Example 2 (7 min)
Order the following integers from least to greatest.
-5, 2, -3, 0
Strategy Use a number line to order the integers.
Step 1
The integer that is the farthest left is the least.
-5 is the farthest left, so it is the least integer.
Step 2
Order the remaining integers from left to right.
-3 is to the left of 0, which is to the left of 2.
Solution From least to greatest the integers are -5, -3, 0, 2
E. Independent Practice. The students will compare and order integers. The teacher will walk around
the room informally assessing the students work and answering any questions that the students might
have. (19 min)
CLOSURE: (2 min)
This period we compared and ordered integers. Next period we will add and subtract integers.
Remember what we learned today it will help you next period.
Objective:
TSW compare and order integers. (DOK 2, 1h)
ASSESSMENT:
Informal
The students will complete a set of problems that will require them to compare and order integers (C).
The teacher will walk around the room informally assessing the students work (M).
Formal
The students will take a test on Friday (M) which will require them to compare and order integers (C).
This test will be graded and recorded in the grade book (D).