Transcript Wednesday, August 18 Pre

Wednesday, August 18
Algebra I
 Fill in Planner
– Assignment: Practice 1-1
(Enrichment 1-1 is extra
credit)
 Agenda for today
– Distribute Textbooks (15
minutes)
– Complete textbook
scavenger hunt (10 minutes)
– Notes (25 minutes)
– Group Practice (15 minutes)
– Independent work on
assignment (21 minutes)

Bell Ringers
1. 1 week = _7_ days
2. 1 foot = _12_ inches
3. 1 nickel = _5_ cents
4. 1 gallon = _4_ quarts
5. 1 yard = _3_ feet
School pictures will be Wednesday, August 25
Scavenger Hunt Answers
1.
2.
3.
4.
5.
6.
7.
Systems of Equations and Inequalities
Probability of Compound Events
Red
236
2004
a keyboard
A monomial or the sum or difference of two or
more monomials. (p. 457)
8. blue, pink, green.
Objective for Today’s Lesson
 Students will be able to model relationships
with variables, equations, and formulas.
Why is this important?
Definitions
1. Variable: A symbol, usually a letter that
represents one or more numbers. (Ex. x+3; x is a
variable)
2. Algebraic expression: A mathematical phrase
that uses variables, numerals, and operation
symbols. (Ex. x+3; x+3 is a variable expression)
3. Equation: A mathematical statement that uses an
equal sign. (Ex 3x+7=10 is an equation)
Write an algebraic expression or
equation for each word phrase
1.
Two times a number plus 5
2n  5
2.
7 less than 3 times a number
3a  7
3.
The sum of 9 and k minus 17
4.
9.85 less than the product of t
9  k  17
37t  9.85
and 37.
Rags to Riches
Write an equation to model the
relationship in each table.
Number of
Days
1
2
3
4
Change in
Height (m)
0.165
0.330
0.495
0.660
d= number of days
h= change in height
h= 0.165d
Time
(months)
1
2
3
4
Length
(inches)
4.1
8.2
12.3
16.4
m= number of months
l= length
l=4.1m
Objective for Today’s Lesson
 Students will be able to model relationships
with variables, equations, and formulas.