## Saturday, January 26, 2013

### Midterm Reflection Algebra II (4)

The midterm in Algebra II (4) had an average of 80% with a median of 84% for 42 students. The midterm is worth 10% of a student's final grade in Algebra II.

We will start our unit on Polynomials next.  There will be at least one quiz and one test, and I hope for two quizzes if possible.

My best,

Patrick Morrissey

#3 graph

## Sunday, January 20, 2013

### Equation of Perpendicular Line Question

January 20, 2013 Algebra II students, I was asked by a fellow student about Problem Set Equations of Lines #2 Problem #11. Here is a worked out solution. My Best, Mr. Morrissey

## Saturday, January 19, 2013

### Midterm Formula Sheet

January 19, 2013

Here is the formula sheet for Algebra II midterm levels 3-4-5.

Mr. Morrissey

## Monday, January 14, 2013

### Algebra II (4) Review for Midterm

January 14, 2013

Algebra II 4/5 Midterm

Topics:
Ch. 1-2:  Absolute value, inequalities, and most importantly equations of lines
Ch. 3: System of Equations
Ch. 5 Polynomials (Level 5 only)

Advice:  Review all old assessments and look at my assessment reflections on my blog. Answer keys of assessments on Moodle.  The problems in this document will be tough, but should be doable.

Format:
Part 1: Multiple Choice 25ish questions on core material for all levels.
Part 2:  Level 4 or 5 Multiple Choice Problems
Part 3:  Open Response Problems

Level 4 Assessments:
Fundamental Operations Quiz
Linear Equations Test
Systems Test
Completing the Square Quiz
Complex Numbers Quiz

Mr. Morrissey

#1-5

#6-10

#11-15

#16-23

## Friday, January 11, 2013

### Chinese 50 RMB Bill

Made out of eggs.  Pretty cool.  I hope this isn't one of those Internet hoaxes!

Mr. Morrissey

## Monday, January 7, 2013

### AMC10/12

From Mr. McGowan...
• Attention Math students.  The 2013 AMC-10 and AMC 12 Exams will be given on Tuesday February 5th (Day 3).  4000 schools around the world administered this exam last year.  Many Colleges and Universities ask for your AMC score on their applications.  If you do not sign up now, there will not be an exam for you on February 5th.  Please put your name and email address on the sign up sheet in C108, or email Mr. McGowan.

### Algebra II (5) Students...

Look in the tab called "Educreation Videos" for today's homework video called "Graphing Polynomials.

Mr. Morrissey

## Thursday, January 3, 2013

This is really a fabulous resource. Check out Sal Khan's Algebra page. Example 1: Completing the square: U10_L1_T2_we1 Completing the Square 1

## Tuesday, January 1, 2013

### Algebra II (4) Assessment Reflection #6

January 1, 2013

The average was 74% for my two classes. This was the toughest quiz to date. The quiz came immediately before vacation and was the first time students had to use the Quadratic formula. In class we are going to look closely at student work on this post.

All comments are for the picture immediately below.

This graph is going the wrong way...

This is a nice job especially since the graph is upside down.

Below, where is the origin?

When writing an equation of a quadratic we must know which equation (vertex or intercept form) is most appropriate to start with.  Here, the student used vertex form incorrectly.  This problem gives you the x intercepts so intercept form is the best first step.
Below, same mistake.  This equation could never be right since there is no "x" value.

Now lets look at some problems that involve simplifying the Quadratic Formula. Here the student made a common mistake of not making the part under the radical a negative 108.  Also, the square root of 108 can be simplified.

Next this student used "r" in the quadratic formula, when all of the coefficients were already known.   The work should have been only numbers.

Below, the 6 in the denominator was divided evenly into the part under the radical.

Below, can you spot the small simplifying mistake?

Below, the same type of error was made like the problem above.
Finally some small errors to be mindful of...

Below is the assessment data. Raw % and % Correct when partial credit is factored in.  Quadratics is a major part of our midterm exam and we'll be spending time before midterms reinforcing this unit [and the topics that came before like equations of lines and systems].

My Best,

Patrick Morrissey