PreCalculus at Lathrop High School Back to JeffBaldwin.org
PreCalculus is offered
at Lathrop High School to prepare students for AP Calculus AB and AP Calculus BC.
Since we are on Block Schedule, we are able to offer both AP Calculus programs.
First year AP Calculus AB is offered in the Fall, and
second year AP Calculus BC is offered in the Spring. In May the students are
able to take the AP Calculus BC test which will also have an AB subscore. It’s
a twoforone offer, you get two AP scores for taking only 1 test. Our
PreCalculus program specializes in preparing students for the course work in
both of the AP courses.
The content of the
PreCalculus class includes Functions and Graphs, Polynomials, Quadratics and
Conics, Solving Systems, Matrices, Trigonometry, Complex Numbers, Sums, Series
and Sequences, Polar Coordinates, Parametric Equations, and other topics.
The class is rigorous and
rapid. It is analytical in nature and the students are warned that it will be
difficult in content and speed. Mr. Baldwin will do anything he can to help,
but the students will need to remain totally engaged during class and be
reengaged at home every night for studies. Students may
call Mr. Baldwin anytime, 247, for math help,
his phone number is 5941894. His work
email is jbaldwin@musd.net, his home
email is baldjeff@comcast.net, and
his business email is bald@jeffbaldwin.org.
His cell phone is (360) 6400093.
Parents are invited to communicate with Mr. Baldwin at any time for any reason.
Also, please check your child’s progress in this class daily using Parent Portal.
Parents: Your child is expected to put at least two hours
of energy into their PreCalculus work each and every night
regardless of assigned homework. Regardless of what they may tell you, there is
NEVER a night where they do not have
two hours of homework. The result of not doing this will be poor test and quiz
performance and therefore poor grades. I am available on a 247 basis. If your
child is not performing to your specifications, please remove all the
distractions from their nights. This would include Internet, television, cell
phones, texting, emailing, and possibly more, such as sports and cheerleading.
Many students fail PreCalculus, and later tell me that they continued in their
other interests to the tune of 3 to 5 hours a day. This really is a dealbuster
for an analysis class. Sorry for the bad news, but I am brutally honest. Other
things in their lives that take hours a day will destroy their PreCalculus
performance. Period. The intensity will not seem that great at first, but it
will suddenly hit like a bat, and those who are not in the habit of
timedevotion are going to be the ones that fail.
There are a few subjects
that have the same thing in common, and that is if you are in it all the way it
will be the coolest thing you’ve ever seen, but if you get behind and confused,
it will be the worst thing you’ve ever experienced. They would be logs, trig,
matrices and sums. Your energy in can’t be high enough. I’ll say “I told you
so” later on when you’re there and you haven’t put that energy in.
This class is
specifically designed for students who are planning on becoming engineers,
doctors, and otherwise members of the technological community. If you are
taking this class for other reasons, such as to increase your transcript
status, please be aware that it will be paced quickly and rigorously for the
intent of this high level of expectation. Please increase your level of rigor
and personal performance minimum standards to this degree.
One more thing to mention
parents. Many kid who get into a PreCalculus
class are those straightA students who always gets As
in their math classes. They do this by memorizing a chapter’s content, puking
it out to the teacher in a test, then forgetting that material so they can move
on to the next thing to memorize. This will not work in an analytical math
class. The student must be able to continue on with the material and use it by
thinking, not regurgitating. If your straightA student suddenly is getting
lower grades, please remember that you have been told this and the ability to
think a problem through may not yet exist and must be developed. Chronically
retaking exams is not the answer, so please do not beg me for this service. Not
getting an A may be the wakeup call you child requires to learn how to think
rather than responding with memorized junk.
Here ae some group
workings by the kids.
Just before Halloween in
2015 our PreCalculus class determined the distance from Mr. Baldwin’s doorknob
and Mr. McGrath’s doorknob. The problem is that the buildings themselves are in
the way. So Way 1 to determine this was to go from Baldwin’s doorknob to the
flagpole by the theatre, then from the theatre to McGrath’s doorknob, determine
that angle, and use the Law of Cosines to determine this distance [assuming the
Earth is flat, which it isn’t]. Here is a student created chalkboard picture of
the problem drawn by Prassad.
A tree was in the way
between Baldwin’s room and the pole, and another tree was in the way between
the pole and McGrath’s room. Issues were solved.
Meanwhile, three students
measured down the building from McGrath’s room, then along his building, then
down the hall to Baldwin’s building, then over to Baldwin’s door, and the total
east distance was computed, the total south distance was computed, and the
Pythagorean Formula was used to hopefully match the Law of Cosines formula.
Here is the chalkboard work by Giri.
A table was set up by the
flag pole to mark directions to the doors. They were drawn on the table and the
angle was measured back in the classroom. Yang used a mirror to align the ruler
to point directly at each door. This enabled him to not have to look through
the flag pole [impossible].
Lots of hard working
PreCalculus students.
Our
Approximate Schedule
8/8/2018 
Intro, Real Numbers 
8/9/2018 
Functions, Domain, Range 
8/10/2018 
Transformations 
8/13/2018 
Compositions 
8/14/2018 
Inverse Functions 
8/15/2018 
Master Ch 1 
8/16/2018 
Test Ch 1 Functions and Graphs 
8/17/2018 

8/20/2018 

8/21/2018 

8/22/2018 
Quadratics 
8/23/2018 
Polynomials 
8/24/2018 
Synthetic Division, Polynomial Division 
8/27/2018 
Complex Numbers 
8/28/2018 
Zeros, Factors, Roots 
8/29/2018 
Rational and Radical Functions 
8/30/2018 
Master Ch 2 Polynomials 
8/31/2018 
Test Ch 2 Polynomials Rational
Functions 
9/4/2018 

9/5/2018 

9/6/2018 

9/7/2018 
Exponents 
9/10/2018 
Graphs of Exponents 
9/11/2018 
Logs Graphs of Logs 
9/12/2018 
Growth and Decay 
9/13/2018 
Master Ch 3 Exp
Log 
9/14/2018 
Test Ch 3 Exp
Log 
9/17/2018 

9/18/2018 

9/19/2018 

9/20/2018 
Unit Circle 
9/21/2018 
Trig Functions 
9/24/2018 
Right Triangle Trig 
9/25/2018 
Graphs of Trigs 
9/26/2018 
Invese Trig 
9/27/2018 
Master Basic Trig 
9/28/2018 
Test ch 4 Basic Trig 
10/1/2018 
Trig Identities 
10/2/2018 
Proving Trig Identities 
10/3/2018 
Solving Trig Equations 
10/4/2018 
Sum Diff Rules 
10/5/2018 
Double Angle Half Angle Rules 
10/8/2018 
Master Ch 5 Trig 
10/9/2018 
Test Ch 5 Trig 
10/10/2018 

10/11/2018 

10/12/2018 

10/22/2018 
Law of Sines,Law of Cosines 
10/23/2018 
Vectors 
10/24/2018 
Dot Product 
10/25/2018 
Trig form of Complex Numbers 
10/26/2018 
d'Moivre'sTheorem 
10/29/2018 
Master ch 6 Trig 
10/30/2018 
Test Ch 6 Trig 
10/31/2018 

11/1/2018 

11/5/2018 
Matrices 
11/6/2018 
Matrices 
11/7/2018 
Matrices 
11/8/2018 
Master Matrices 
11/9/2018 
Test Ch 8 Matrices 
11/13/2018 

11/14/2018 

11/15/2018 
Rules of Summation 
11/16/2018 
Rules of Summation 
11/19/2018 
Geometric Series 
11/20/2018 
Summation 
11/21/2018 
Math Induction 
11/26/2018 
Binomial Theorem 
11/27/2018 
Binomial Theorem 
11/28/2018 
Master ch 9 Summation 
11/29/2018 
Test Ch 9 Summation 
11/30/2018 

12/3/2018 

12/4/2018 

12/5/2018 
Conics 
12/6/2018 
Conics 
12/7/2018 
Polar Coordinates 
12/10/2018 
Polar Coordinates 
12/11/2018 
Conics in Polar Coordinates 
12/12/2018 
Conics in Polar Coordinates 
12/13/2018 
Master Ch 10 Conics and Polar Coords 
12/14/2018 
Test Ch 10 Conics Polar Coords 
12/17/2018 

12/18/2018 

12/19/2018 

12/20/2018 
Finals 
12/21/2018 
Finals 





PreCalculus 
1/9/2019 
Intro, Real Numbers 
1/10/2019 
Functions, Domain, Range 
1/11/2019 
Transformations 
1/14/2019 
Compositions 
1/15/2019 
Inverse Functions 
1/16/2019 
Master Ch 1 
1/17/2019 
Test Ch 1 Functions and Graphs 
1/18/2019 

1/22/2019 

1/23/2019 

1/24/2019 
Quadratics 
1/25/2019 
Polynomials 
1/28/2019 
Synthetic Division, Polynomial Division 
1/29/2019 
Complex Numbers 
1/30/2019 
Zeros, Factors, Roots 
1/31/2019 
Rational and Radical Functions 
2/1/2019 
Master Ch 2 Polynomials 
2/4/2019 
Test Ch 2 Polynomials Rational
Functions 
2/5/2019 

2/6/2019 

2/7/2019 

2/8/2019 
Exponents 
2/12/2019 
Graphs of Exponents 
2/13/2019 
Logs Graphs of Logs 
2/14/2019 
Growth and Decay 
2/15/2019 
Master Ch 3 Exp
Log 
2/19/2019 
Test Ch 3 Exp
Log 
2/20/2019 

2/21/2019 

2/22/2019 

2/25/2019 
Unit Circle 
2/26/2019 
Trig Functions 
2/27/2019 
Right Triangle Trig 
2/28/2019 
Graphs of Trigs 
3/1/2019 
Invese Trig 
3/4/2019 
Master Basic Trig 
3/5/2019 
Test ch 4 Basic Trig 
3/6/2019 
Trig Identities 
3/7/2019 
Proving Trig Identities 
3/8/2019 
Solving Trig Equations 
3/11/2019 
Sum Diff Rules 
3/12/2019 
Double Angle Half Angle Rules 
3/13/2019 
Master Ch 5 Trig 
3/14/2019 
Test Ch 5 Trig 
3/15/2019 

3/25/2019 

3/26/2019 

3/27/2019 
Law of Sines,Law of Cosines 
3/28/2019 
Vectors 
3/29/2019 
Dot Product 
4/1/2019 
Trig form of Complex Numbers 
4/2/2019 
d'Moivre'sTheorem 
4/3/2019 
Master ch 6 Trig 
4/4/2019 
Test Ch 6 Trig 
4/5/2019 

4/8/2019 

4/9/2019 
Matrices 
4/10/2019 
Matrices 
4/11/2019 
Matrices 
4/12/2019 
Master Matrices 
4/15/2019 
Test Ch 8 Matrices 
4/16/2019 

4/17/2019 

4/18/2019 
Rules of Summation 
4/23/2019 
Rules of Summation 
4/24/2019 
Geometric Series 
4/25/2019 
Summation 
4/26/2019 
Math Induction 
4/29/2019 
Binomial Theorem 
4/30/2019 
Binomial Theorem 
5/1/2019 
Master ch 9 Summation 
5/2/2019 
Test Ch 9 Summation 
5/3/2019 

5/6/2019 

5/7/2019 

5/8/2019 
Conics 
5/9/2019 
Conics 
5/10/2019 
Polar Coordinates 
5/13/2019 
Polar Coordinates 
5/14/2019 
Conics in Polar Coordinates 
5/15/2019 
Conics in Polar Coordinates 
5/16/2019 
Master Ch 10 Conics and Polar Coords 
5/17/2019 
Test Ch 10 Conics Polar Coords 
5/20/2019 

5/21/2019 

5/22/2019 
Finals 
5/23/2019 
Finals 
5/24/2019 
Finals 
A
few hyperlinks to use.
Click ME to download and print the Chapter 1 Expectations! This link needs repairs
Click ME to download and print the Chapter 3 Expectations! This link needs repairs
Click ME to download and print graphing quadratics.
Click ME to see how to graph sinusoids.
Click ME to
download and print the Final Prep Sheet! This
link needs repairs
Click ME to get to Conic Sections Stuff!
Click ME to get to Dog Problems!
Click ME to download and print the Symbols sheet!
Click ME to download and print rational functions instructions!
Click ME to download and print radical functions!
Click ME to download and print
rules of Exponents and Logs!
Click ME to download and print money and economic formulae.
Click ME to download and print Midterm Final material. This link needs repairs
Click ME to see the U.S. Census!
Click ME to download and print the Trig Builder Sheet!
Click ME to download and print the Trig Identities Cheat Sheet!
Click ME to watch my You Tube video on the Proof for the Cosine Sum/Difference Rule!
Sorry for how fast these go, that’s why there’s this video.
Click Me to watch my You Tube video on the Proof for the Sine Sum/Difference Rule!
Sorry for how fast this goes, that’s why there’s this video.
Click ME to download and print the Trig Identities Verification Worksheet!
Click ME to download and print the expectations of the PreCalculus Midterm Final Exam occurring October 2014. This link needs updating
Click ME to use deMoivre’s theorem to determine nth roots of complex numbers.
Click ME to learn about solving Matrices by manipulating them into Reduced Row Echelon form.