From FoxNews
BAN LOMTUAN, Thailand — Preecha Jiabyu used to take tourists on a rowboat to see the banks of the Mae Klong River aglow with thousands of fireflies.
(more…)
August 30, 2008
Statistics — Lights Out? Experts Fear Fireflies Are Dwindling
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August 28, 2008
Statistics Project…
Use the comment section to post your small essay. Thank you.
Project: Write a small essay about the importance of statistics involving studies on the effectiveness of a new drug.
August 27, 2008
Pre-Calculus Assignment — Handout AR10 plus key
Use this review to prepare yourself for the test. You should also review your notes, especially close attention to those problems I said that I really liked. When the old man says he really likes a problem, that should mean something. Good luck.
Geometry — Chapter 2-1 Syllabus
Geometry
Test 2 – Chapter 2-1 (7 Days)
5 Days, Test Day 6 and 7
1. Handout 2510
2. Handout 2520
3. Handout 2110
45. Book 2.1 Study Example 6 on page 70. Study Example 7 on page 70. Answer the Check Understanding 7. Study the Key Concepts on page 70. Write the Statement, the Symbolic Form, and the You Read It columns. page 71: 2, 4, 5, 6, 7, 9, 12, 15, 16, 19, 22, 23, 24, 32, 42, 49, 52, 54, 57, 59, 60, 61, 67
5. Book 2.2 Study Example 2 on page 76. Study Key Concepts on page 76. Write the Statement, the Symbolic Form, and the You Read It columns. Study Example 3 on page 77. Answer the Check Understanding 3. page 78: 1, 10, 17, 21, 23, 50, 51
67. Handout 2310
7. Book 2.3 Write this section’s Key Concepts. page 84: 10, 14, 15, 33 – 35, 42, 43, 44
TEST (2 Days)
2.1 Recognize conditional statements; Write converses, inverses, and contrapostives of conditional statements; Write biconditional statements
2.2 Write biconditionals; Recognize good definitions
2.3 Use the Law of Detachment and Law of Syllogism
2.5 Connect reasoning in algebra and geometry; Identify angle pairs; Prove and apply theorems about angles
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August 26, 2008
Statistics — Study Shows Cows Have Innate Sense of Direction
From FoxNews
WASHINGTON — Somehow, cattle seem to know how to find north and south, say researchers who studied satellite photos of thousands of cows around the world.
Most cattle that were grazing or resting tended to align their bodies in a north-south direction, a team of German and Czech researchers reports in Tuesday’s issue of Proceedings of the National Academy of Sciences.
And the finding held true regardless of what continent the cattle were on, according to the study led by Hynek Burda and Sabine Begall of the faculty of biology at the University of Duisburg-Essen in Germany.
“The magnetic field of the Earth has to be considered as a factor,” the scientists said.
This challenges scientists to find out why and how these animals align to the magnetic field, Begall said in an interview via e-mail.
“Of course, the question arises whether humans show also such a spontaneous behavior,” she said, adding, what “consequences does it have for their health.”
The study sent Tina Hinchley, who with her husband Duane operates a dairy farm at the state of Wisconsin, to take a new look at an aerial photo taken of their farm a few years ago.
“The cows that were in the pasture were all over the place … about two-thirds were north-south,” Hinchley said.
Two-thirds is close to what the researchers found in their look at 8,510 cattle in 308 pastures. In the study, 60 percent to 70 percent of cattle were oriented north-south, which Begall termed a “highly significant deviation from random distribution.”
Hinchley stressed that one factor that needs to be considered is cow comfort.
“They don’t like to get hot. Their body temperature is 102, (34 Celsius) and they are wearing black leather jackets, literally! If turning north-south would keep them cooler, they would stand that way.”
Pre-Calculus Assigment — A510
Pre-Calculus
A510
Factor the following using division techniques.
1. x3 + 8x2 + 11x – 20
2. x5 + 5x4 – x3 – 17x2 – 48x + 60
3. 2x3 – 5x2 – 4x + 12
4. x4 + x3 – 3x2 – x + 2
5. x4 – x3 – 6x2 + 4x + 8
6. 2x4 + 17x3 + 35x2 – 9x – 45
7. x5 + x4 – 20x3 + 15x2 + 29x – 6
August 24, 2008
Lesson Plans — Week 3 — August 25 – 29, 2008
Lesson Plans August 25 – 29, 2008
Pre-Calculus
Standards: Models for Real World Phenomena; Algebraic Functions; Trigonometric Functions; Sequences and Series
Monday August 25 A.4 Reduce a rational expression to lowest terms; Multiply and divide rational expressions; Add and subtract rational expressions; Use the least common multiple method; Simplify mixed quotients
Tuesday August 26 A.5 Divide polynomials using long division and synthetic division
Wednesday August 27 Review Chapter A Sections 1 – 5
Thursday, Friday August 28, 29 TEST Chapter A Sections 1 – 5 Test
Geometry
Standards: Number and Operations; Algebra; Geometry; Measurement; Data Analysis and Probability
Monday August 25 Review Chapter 1
Tuesday, Wednesday August 26, 27 TEST Chapter 1 Test
Thursday, Friday August 28, 29 2.5 Identify angle pairs; Prove and apply theorems about angles
Statistics
Standards: Experimental Design; Data Analysis
Monday – Wednesday August 25 – 27 Review Chapter 1; Organize notebook; The definition of statistics; How to distinguish between a population and a sample and between a parameter and a statistic; How to distinguish between descriptive and inferential statistics; How to distinguish between qualitative data and quantitative data; How to classify data with respect to the four levels of measurements: nominal, ordinal, interval, and ratio; How to design a statistical study; How to collect data by taking a census, using a sampling, using a simulation, or performing an experiment; How to create a sample using random sampling, simple random sampling, stratified sampling, cluster sampling, and systematic sampling, and how to identify a biased sample
Thursday, Friday August 28, 29 TEST Chapter 1 Test
Friday August 29 Project Due: Post online an essay about the importance of statistics involving studies on the effectiveness of a new drug. No handwritten work.
For all classes.
Activities: Lecture, Board work, Classroom participation
Material: Book problems and Teacher made handouts
Assessment: Daily assignments graded for accuracy. Unit test planned.
In order to address the Physical Activity requirement… My classes and I will enjoy a 15 minute walk once a week. The following are the dates planned. These may change due to weather or if opportunity allows, an earlier date.
Pre-Calculus: Wednesday.
Geometry: Friday.
Statistics: Monday.
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