Category Archives: Pre-Algebra

Pre-Algebra: Chapter 10-8 Problem Solving Strategy Use a Simulation A simulation is an application of the Acting It Out problem solving strategy. A simulation acts out the event so that you can see the outcomes. Examples 1 and 2 on … Continue reading →

Pre-Algebra: Chapter 10, Lesson 5 Counting (we skipped Lesson 4 deliberately) We learned the Fundamental Counting Principle: If event X can occur in “a” ways and is followed by event Y that can occur in “b” ways, then the event … Continue reading →

Pre-Algebra: Chapter 10-3 Box and Whisker Plots A box and whisker plot summarizes data using the median, the upper and lower quartiles and the highest and lowest extreme values. See this link to do a few examples. It’s easier to … Continue reading →

Pre-Algebra: Chapter 10, Lesson 2 Measures of Variation Definitions: RANGE: The range of a set of numbers is the difference between the least and the greatest number in the set. MEDIAN: The middle number in a given data set. IF … Continue reading →

Pre-Algebra: Chapter 10-1 Stem and Leaf Plots Stem and leaf plots are a handy and quick way to show data trends. In a stem and leaf plot, the greatest place value common to all the data values is usually used … Continue reading →

Pre-Algebra: Chapter 9 Test Today, there is NO homework! Algebra: Chapter 10-10 Complex Rational Expressions To simplify a complex rational expression, multiply the numerator and denominator by an expression equivalent to 1. The expression selected should use the least common … Continue reading →

Pre-Algebra: Chapter 9 Review We did the Chapter 9 Form 1a version of the test. Make sure that you have all your problems done and questions answered. The TEST is MONDAY! Algebra: Chapter 10, Lesson 9 Dividing Polynomials See yesterday’s … Continue reading →

MrE is at a CABE (Californian Association of Biligual Educators) Conference today and tomorrow, he will be back in class on Monday! Pre-Algebra: Chapter 9 Review It’s time to review Chapter 9! We should be able to: Write fractions in … Continue reading →

Pre-Algebra: Chapter 9-10 Percent of Change We have a simple formula for percent of increase or percent of decrease. We use: (new value – old value) ÷ (old value) to find the percentage change. If the percent change is NEGATIVE, … Continue reading →

Pre-Algebra: Chapter 9-9 Using Percent Equations Some definitions are in order. Discount is the amount that we save when something is on sale. Interest is the amount of money that you earn when you lend your money to the bank. … Continue reading →