Transcript Document

Materials
Reminders
Get out your agenda if you see
your name below. I would like
to have you in my FLEX
tomorrow.
Period 2
Period 7
Add or subtract the following.
7
5
1. − −
2.
3.
8
7
3
4
− −
5
7
4
1
5 −7
5
3
3-1 Square Roots
How do I find square
roots of perfect
squares?
Work
Area:
Let’s Make a Foldable for
Vocabulary
1. Fold 3 sheets of paper in half
2. Cut two sheets along the crease from the left edge to
the margin and from the right edge to the margin.
3. Cut the third sheet between the margins.
4. Roll up the 2 sheets from step two and insert into the
slot in the third sheet
5. Unroll and match up the cuts in the two sheets with
the slot in the single sheet
6. Determine the front and Label it, “Chapter 3
Vocabulary”.
7. You should put 2 vocabulary terms per section
Work
Area:
Vocabulary Terms
Perfect Square
The squares of integers. For example (1, 4, 9, 16, 25)
Square Root
The square root of a number is one of its two EQUAL factors.
Example:
𝑇ℎ𝑒 𝑓𝑎𝑐𝑡𝑜𝑟𝑠 𝑜𝑓 25 𝑎𝑟𝑒 5 𝑎𝑛𝑑 5
25 = 5
Radical Sign
The symbol 𝑛 which is notation for, “the square root of n”.
Questions:
Why do we care
about square
roots?
Notes:
If the area of a square room is 36 square feet, how big is the
room on a side?
36 𝑓𝑡 2
Since we can find the area of a square by multiplying the
square’s length by its width, we can find the length of a squares
side by finding the square root of a square’s area.
6ft
6ft
36 𝑓𝑡 2
36 = 6
Questions:
How do I deal
with signs in
front of square
roots?
How do I deal
with he square
roots of
fractions?
Notes:
Keep the sign of the square root, deal with the square root, then
put the sign on the answer?
Example 1:
- 25 = −5
Find the square root of the numerator and the square root of
the denominator separately.
Example:
25
100
=
25
100
5
1
= 10 = 2
Homework
Page 146-147; 11-30
and 43-44
AND Cornell Notes
Summary