Category Archives: Algebra 1a

Day 2 – August 23

Posted on August 24, 2011 by admin

Algebra 1 and 1a: Chapter 1, Lesson 1, page 4. Symbols and Expressions In algebra, we use symbols to stand for various numbers. One type of symbol is called a VARIABLE. An expression such as `396/v` and contains at least … Continue reading →

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Day 1 – August 22

Posted on August 19, 2011 by admin

Welcome to Algebra 1 and 1a classes! Here you will find my notes of today’s lesson. All students should start on their first homework assignments: Syllabus signed by student and parent/guardian (due Friday, August 26) Million words or less begun … Continue reading →

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Day 167 and 168 – May 18, 19

Posted on May 18, 2011 by admin

Algebra 1a: Chapter 9, Lesson 6, page 421. Graphing Systems of Linear Inequalities We continue Chapter 9-5 techniques and solve 2 inequalities. For the first equation, we can use any technique we learned from Chapter 7. Usually, the slope-intercept or … Continue reading →

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Day 165 and 166 – May 16, 17

Posted on May 16, 2011 by admin

Algebra 1a: Chapter 9, Lesson 5, page 417. Inequalities in 2 variables Given an inequality, treat it as an equality and using the `x` and `y` intercepts, find the solution to the equality. Plot it on your graph paper. If … Continue reading →

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Day 163 and 164 – May 12, 13

Posted on May 12, 2011 by admin

Algebra 1a: Chapter 9, Lesson 4, page 413. Inequalities and Absolute Value If the inequality with absolute values looks like: `| A | < b`, then we solve the conjunction `-b < A < b`. Think of a number line, … Continue reading →

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Day 162 – May 11

Posted on May 11, 2011 by admin

Algebra 1a: Chapter 9, Lesson 3, page 411. Equations and Absolute Value To solve an equation of the form `| A | = b`, solve the disjunction `A = b` OR `A = −b`. You will have 2 equations to … Continue reading →

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Day 142 thru 161 – April 13 to May 10

Posted on May 10, 2011 by admin

Algebra 1a: CST Testing Review! Algebra 1a notes will resume after testing is OVER!

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Day 140 and 141 – April 11, 12

Posted on April 12, 2011 by admin

Algebra 1a: CST Review WK7 (April 12): Area of Triangles, Parallelograms and Trapezoids Triangle: `A = (bh)/2` or `A= 1/2(bh)` where `b` is the base and `h` is the vertical height. Sometimes it is useful to move the triangle around … Continue reading →

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Day 137 thru 139 – March 30, 31, April 1

Posted on April 12, 2011 by admin

Algebra 1a: CST Review WK5 (April 1): The area of a circle is defined as `A = πr^2`. The relationship between the radius `r` and the diameter `d` is: `2r=d` or `d/2=r` Remember on the 12-2 worksheet (page 101), that … Continue reading →

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Day 135 and 136 – March 28, 29

Posted on March 29, 2011 by admin

Algebra 1a: CST Review Square Roots: The `sqrt(25) = 5`. The `sqrt(5)` can be approximated as somewhere between the `sqrt(4)` and the `sqrt(9)`. `sqrt(9)=3` `sqrt(5) = ?` `sqrt(4)=2`, so `sqrt(5)` is closer to `sqrt(4)` than `sqrt(9)`.  A good guess could … Continue reading →

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