# Lesson 5.5: Rational Numbers and Decimals

advertisement ```11/28/12-11/29/12 (GT)
•Find Seat
•Open notebook to notes section
and write date and lesson title
above.
• Begin Warm-up – 10 min (work with partner)
Obj:
Students will be able to determine if a number is a perfect square or a
perfect cube; list the first 15 perfect squares; and evaluate square roots
of small perfect squares and cube roots of small perfect cubes. (CCES:
MP.3, MP.7, Pre-8.EE.2)
Teacher will distribute “In search of Perfect Squares” worksheet with GEOBOARD Paper.
Students will work with partners to complete activity (15 min). Once done, teacher will
review answers and list first 15 perfect squares on the board.
Teacher will distribute “Squares and Square
Roots” worksheet to be completed by
tomorrow. (5 min)
Check out www.brainpop.com and search for
square roots



Home decorating: A remnant of carpet in the
shape of a square is advertised as 16 square
yards. That will cover an area that measures 4
yards by 4 yards.
Law enforcement: In order to find the speed of a
car after a collision, an investigator can measure
the length of the skid marks (L) and apply the
formula: speed = 2
Computer programming: Square root and
absolute value functions are often used in
computer programming to ensure a positive
number is used for calculations.
In your own words, what
makes a number a perfect
square? A perfect cube? (3 min)
To review with students prior days lesson,
students will play Who has, I have…
Let’s talk about perfect cubes?
(Teacher will distribute worksheet on perfect cubes and allow
students to work in pairs. Discussion to follow)
11/28/12-11/29/12 (GT)
•Find Seat
•Take out sheet of paper
•Sit quietly
Obj:
Students will be able to determine if a number is a perfect square or a
perfect cube; list the first 15 perfect squares; and evaluate square roots
of small perfect squares and cube roots of small perfect cubes. (CCES:
MP.3, MP.7, Pre-8.EE.2)
A.
9
112
C. 324
D. 400
B.
A.
1
16
C. 225
D. 197
B.
A.
100
144
C. 282
D. 361
B.
A.
25
112
C. 169
D. 256
B.
A.
10
64
C. 251
D. 300
B.
361 =
49 =
256 =
196 =
121 =
36
8
What is the square root of 20?
20  4  5  2 5
What is the square root of 18?
18  9  2  3 2
What is the square root of 32?
32  16 2  4 2
```