Friday, October 19, 2018

Deficient Skills

Deficient math skills begin in the 1st grade and rise up the grades and into adulthood.

Only 22% of 12th-grade students are proficient in science, 25% in math, and 37% in reading (NAEP, 2017). Also, the most recent ACT Math scores are at a 20-year low. And, according to an ETS report, U.S. students lack the "necessary skills across the domains of literacy, numeracy and problem-solving." 

Why? 

I have an answer, but you won't like it: It's the teaching. 

Many teachers are handed a substandard curriculum and use inferior instructional methods that are advocated by liberal professors in ed schools. The curriculum in math is not benchmarked to international standards. Unfortunately, teachers often implement minimal guidance methods of instruction (e.g., group work) that are inefficient.

Fundamentals Are Not Taught for Mastery!
The fundamentals, starting with 1st-grade arithmetic, are not taught for mastery, which involves memorization and drill-to-develop-skill. Students are taught reform math, not standard arithmetic. Also, the minimal-guidance teaching methods (group work) are inefficient compared to explicit teaching. Moreover, the math curriculum is not world class. For example, U.S. 1st-grade students learn substantially less than their counterparts in Singapore. Furthermore, teaching to the test items is a lousy method to teach fundamentals. 

Standard arithmetic is straightforward and simple, but the liberal reformers have complicated it and made it complex, difficult, and confusing for students. To make matters worse, there are all the fads, regulations, trends, policies, and extras that are pushed into the classroom by progressive reformers. 

Kids are novices, not little mathematicians. Novices need to memorize stuff. 

ETS Report states that Many Millennials Lack Literacy, Numeracy, and Problem-Solving Skills!
1. Literacy: U.S. millennials scored lower than 15 of the 22 OECD participating countries (OECD is the Organization for Economic Co-operation and Development).
2. Numeracy: U.S millennials ranked last with Italy and Spain.
3. PS-TRE (Problem Solving in technology-rich environments): 
U.S. millennials ranked last with Slovak Republic, Ireland, and Poland. 

The ACT Math Scores have sunk to a 20-year low! Kids don't have strong math skills that are essential for STEM jobs to power the economy. In the classroom, the mastery of fundamental content through memorization and practice-practice-practice has not been the goal. Instead of traditional (i.e., standard) arithmetic, students are taught reform math.

US education has been following the wrong path for decades.  
Test-based reforms, NCLB (now ESSA), Common Core, state standards based on Common Core, state tests, fallacious "fairness" policies, and other progressive fads and trends--such as credit recovery, inclusion, group work, more money, more tech, and so on--have been false starts. 

Kids stumble over simple arithmetic. 
Teaching reform math rather than traditional or standard arithmetic in the early grades has flunked. The national and international math tests show that our students are behind the best-performing nations in math by a wide margin. Furthermore, the high rates of remedial math (up to 88% of incoming students at community colleges) are another red flag.

In my opinion, the progressive-left or liberal narrative has damaged public education with radical ideas such as credit-recovery schemes and "fallacious fairness policies" as Sowell has pointed out. In mathematics, for example, the mastery of content knowledge and skills is not stressed in progressive (liberal-left) classrooms, starting with 1st-grade arithmetic. 

Grade Inflation Kills
Children do not live in Lake Wobegon where all are above average. They are unequal. Regrettably, merit and achievement do not count for much in many schools today. Still, parents think their schools are doing great when they are not. In math, for example, teachers often give As and Bs for substandard performance. Grade inflation is entrenched in school policies. It has been a pretense for equality, inclusivity, diversity, and social justice. 

In the real world, getting a passing grade on the state test should not imply that the student has mastered grade-level content and skills in math. Many parents do not realize how poorly their child is doing in math because the math curriculum is not world-class beginning in the 1st grade. Also, teachers inflate grades and pass students to the next grade level. A student can get As in class and fail the state test in math. It's crazy! Students are passed to 4th grade without mastering the times table in 3rd grade, and so on. Indeed, by the 4th or 5th-grade, math students are at least two years behind their peers from other nations. One cannot make the unequal, equal. Note. Parents want their child with grade-level kids, not in a class fitting their instructional needs, so teachers pass them on. 

Mathematics Professor H. Wu, UC-Berkeley, discussed the problems of implementing Common Core state standards. He wrote parts of it (e.g., fractions). Wu acknowledged that Common Core would likely fail because K-8 teachers do not know enough math content to teach it well. No amount of professional development will change this, he said.

Mark Pulliam writes, "Diversity means singling out certain races for special treatment." It's called equity, but it is hardly fair. According to the progressive-left narrative, opinion about anything is as valid as the next. It's nonsense.

Education, today, is not about learning and applying content; it is about diversity, inclusivity, equality, and social justice. You are on the wrong side if you don't buy into the progressive-left narrative that equality in everything is everything. Really?

Individuals vary widely. 
We are unequal. 
You can't legislate equity via social justice. You can't make the unequal, equal. Merit and achievement are not considered in the progressive narrative. Everyone is the same. But, we are clearly not. 

Against the status quo of the progressive-left, kids who excel in math achievement should not be placed with low achieving students for math class. They should be pulled out and taught by an algebra teacher for math class. On the other end of the spectrum, Singapore pulls out students with weak numeracy skills at the start of 1st grade to catch them up.   

Many Millennials Lack Literacy, Numeracy, and Problem-Solving Skills!
"The rationale for the focus on millennials is simple: This generation of American workers and citizens will largely determine the shape of the American economic and social landscape of the future." The deficient skills of U.S. Millenials should alarm us, but it has not. (Quote: Education Testing Service (ETS) report America's Skills Challenge: Millennials and the Future 2015)

"The youngest segment of the U.S millennial cohort (16- to 24-year-olds), who could be in the labor force for the next 50 years, ranked last in numeracy and among the bottom countries in PS-TRE. In literacy, U.S. millennials scored low, too. Note. Data is from the  Education Testing Service (ETS) report America's Skills Challenge: Millennials and the Future, 2015)

The ETS report states that even our best millennials don't measure up to their peers from other nations. It does not surprise me. Starting in the first grade,  U.S. students are not learning basic mathematics well enough to compete in a world driven by technology engineering, and science. The millennials have been in progressive schools that stressed understanding and problem-solving. What's wrong? The "teaching" was wrong! The mastery of domain knowledge and skills in long-term memory was not stressed. 

Today, students lack the knowledge to do critical thinking (aka problem-solving), not only in math but also in science. Knowledge in long-term memory enables problem-solving, which is domain-specific. 

Only 22% of 12th-grade students are proficient in science, 25% in math, and 37% in reading (NAEP, 2017). Not good!

In short, U.S. students lack the necessary "skills across the domains of literacy, numeracy and problem-solving." 

Also, "The scores of U.S. millennials whose highest level of educational attainment was either less than high school or high school are lower than those of their counterparts in almost every other participating country."  It does not surprise me because government schools have used credit recovery schemes, grade inflation, and watered-down courses to increase their graduation rates.

First-Draft Form. Expect Changes. 
10-27-18, 11-6-18 


©2018 LT/ThinkAlgebra




Tuesday, August 7, 2018

Sowell - Skewed Distributions

The causes of skewed distributions of outcomes are many.
"In recent times, virtually any disparity of outcomes is almost automatically blamed on discrimination, despite the incredible range of other reasons." 



Note: Thomas Sowell ​taught economics at Cornell, UCLA, Amherst and other academic institutions. Currently, Sowell is a scholar in residence as a Senior Fellow at the Hoover Institution, Stanford University. I first noticed him when I read Dismantling America in 2010. Also, he wrote Wealth, Poverty and Politics 2016. His most recent book is Discrimination and Disparities 2018. Gerald P. O'Driscoll, Jr., Senior Fellow, Cato Institute, writes, “In this provocative book, Thomas Sowell turns the table on those who automatically link disparate outcomes to discrimination. He begins by focusing instead on the myriad of factors that need to come together for success." Read the book.   ​

Thomas Sowell (Discrimination and Disparities) says that many policy fixes in education have been counterproductive, such as immediately blaming gaps in educational outcomes on discrimination. Too often, skewed distributions of educational outcomes were wrongly blamed on "genes or discrimination," observed Sowell. The playing field has never been equal and cannot be made level by government "equity crusades," which are "fallacies of fairness." In short, the one-size-fits-all equity fix of the Common Core and other efforts will not erase the skewed distributions. Sowell writes, "The idea that it would be a level playing field if it were not for either genes or discrimination, is a precondition​ in defiance of both logic and facts." ​

What irks me as a teacher is that divergence in education is now called discrimination, and that achievement is now called privilege. It is typical liberal rhetoric that is offensive to all hard-working students who achieve, including students of color. Sowell points out, regrettably, that "in recent times, virtually any disparity of outcomes is almost automatically blamed on discrimination, despite the incredible range of other reasons." (Sowell calls it the invincible fallacy. I call it  a sham when scholarship and achievement are criticized with empty rhetoric.)

The social vision and rhetoric of progressives "treat beliefs as sacred dogmas beyond the reach of evidence or logic." Facts don't matter much! "Facts seem to have become irrelevant, for all too many people, who rely instead on visions and rhetoric."​ 

Also, the idea that inputs do not influence outputs is another issue. ​Of course, they do! Sowell explains, "To admit that inputs affect outputs, whether in education in the economy or other areas, would be to undermine the [social] vision and agenda" [of progressive ideology]. According to Sowell, the invincible fallacy is that "outcomes in human endeavors would be equal, or at least comparable or random, if there were no biased interventions, on the one hand, nor genetic deficiencies, on the other." The invincible fallacy assumes "an even or random distribution of outcomes in the absence of such complicating causes as genes or discrimination."​ The assumption, of course, is wrong! 

The causes of skewed distributions are many. Indeed, life, itself, is unfair, yet "fallacies of fairness" abound in our classrooms. All students get the same instruction under Common Core and state standards regardless of their math achievement, which should drive outcomes to be the same. Not Really! It is wishful thinking. Outcomes would not be the same. The crux is that even if the inputs were the same, which I doubt would be possible, the outputs would still not be the same! As Sowell says, "Equal inputs does not produce equal outputs."

Incidentally, one of the many consequences of the invincible fallacy has been the "dumbing down of education."

Comments: ThinkAlgebra@cox.net

©2018 LT/ThinkAlgebra

Friday, August 3, 2018

STEM

What does STEM mean?
Science - Technology - Engineering - Math

This post is a work in progress. Expect frequent changes. 
The quotes highlighted yellow with a 🔻 triangle symbol are from Nick Arnold, STEM QUEST.

Model Credit: McKaylaS

Click: Visit my New Science Page!

Only 22% of 12th-grade students are proficient in science (NAEP). The Next Generation science standards limit core content in science, especially in chemistry and physics, which are lumped together. Also, many believe that the only way to learn science is through hands-on, inquiry stuff. That's not true! Most science is learned by reading and studying textbooks, in coursework, and from lectures by knowledgeable teachers. Students do not need to reinvent the wheel, not in science or math. Lab experiments are done to reinforce the content taught.  

Below, MIT Professor Catherine Drennan lectures chemistry to over 300 freshmen students packed into a huge lecture hall. Students had textbook reading assignments to study, problem sets to complete, help sessions to attend, labs to do, and exams to pass. MIT Course: Principles of Chemical Science (5-111sc).


In contrast to the Next Gen Framework, "It is never too early to introduce small children to big ideas,observes Chris Ferrie, a physicist, and mathematician, who wrote Quantum Physics for Babies and similar picture books (Baby University).

In teaching complex material in math or science to little kids, I think Jerome Bruner, not Piaget. LT



We should teach the mathematics needed to do and understand the science such as was done in Science--A Process Approach (1967). For example, four of the six processes taught in SAPA's 1st grade were math or math-related. The science teacher taught math, which was often a year or two ahead of the regular curriculum. Today, there seems to be math anxiety in STEM. University of Chicago researchers Sian L. Beilock and Erin A. Maloney contend, "Our students cannot enter into STEM majors if they have a fear of mathematics." In science, teachers should teach STEM Math Skills. K-6 teachers don't have a coherent science curriculum such as SAPA, which stressed the math link in science. Furthermore, elementary school teachers have weak math and science skills. 


🔻"Iscience, you investigate the world around you." 
Science starts with atoms, atomic structure, and how the universe works, including living things, the Earth, our solar system, the galaxies, and stars. "A is for Atom, B is for Black Hole, C is for Charge," writes Chris Ferrie (ABCs of Physics) for young children. 

"The rules that describe nature seem to be mathematical. Why nature is mathematical is again a mystery. Science is a method of finding things out. The method is based on the principle that observation is the judge of whether something is so or not." Also, according to Richard P. Feynman, basically, scientists guess an idea or rule, then test it through experiment and interpret the observations. "If the rule does not agree with experiment, then the rule is wrong." We don't start with a bunch of observations, then infer a rule. "It does not work that way." In science, we guess a rule, then experiment and examine observations (mostly measurements). The experiment and its results must be repeatable by others. The mathematics must be right. An idea you can't test is speculation, not science. "The purpose of theory is to describe nature, not to explain nature." (Source: Richard P. Feynman, The Meaning of It All)

Note: Technology and Engineering are not science; they are products of science. Mathematics is a tool used by scientists to describe nature.

Contrary to the NextGen science standards, elementary school students should study atoms, which are the building blocks of matter, and important molecules like DNA, along with atomic theory or structure (electrons, protons, and neutrons), quantum physics, chemical reactions, motion (Newton's Laws), electromagnetism, the roles of famous scientists, and other topics. 

In classical mechanics (classical physics), at certain distances, opposite charges are attracted and like charges are repelled. It is simple to show this to 1st and 2nd-grade students with N-S magnets. But, when students learn about atoms, classical ideas don't work.

The negatively charged electron should smash into the very tiny, positively charged nucleus according to classical mechanics, but it doesn't. The electron (-) and nucleus (+) stay apart. Why? Also, positively charged protons in the nucleus of atoms stay put. They don't fly apart. Why? 

The classical mechanics of Coulomb's Force Law and Newton's 2nd Law do not work at tiny, atomic distances. A new way of thinking was needed: quantum mechanics (i.e., Quantum Physics). In fact, Chris Ferrie wrote a picture book called Quantum Physics for Babies


Atoms and molecules exist, move, and bounce off each other. 
(Einstein, 1905)


Chris Ferrie writes, "All electrons have energy. An electron can take energy to jump up an energy level and give up energy to fall down an energy level. A quantum is the smallest unit of energy." There is much more to this, of course, but it is a start.  

🔻"In technology, you develop products and gadgets to improve our world." 
The cell phone is a good example of technology.


🔻"In engineering, you solve problems to create extraordinary structures and machines." Engineering often starts with simple machines. In short, you need to learn some physics. Yet, the simple machines are absent from NextGen science standards. Students can be introduced to engineering by building a bridge or a robot. They can build circuits and design and build a structure with Lego. 

Students can use gumdrops and toothpicks to design and build a stable structure such as a bridge. Shapes are important. 

The Six Simple Machines
Lever
Wheel and axle
Pulley
Inclined plane
Wedge
Screw

🔻"In math, you explore numbers, measurements, and shapes." 
Beginning in 1st grade, it is essential that students get used to symbols that represent numbers and unknowns. Math starts with numbers and equations and how they work. For example, x + x + x = 10 - 4 is a 1st-grade level equation. The symbol x must be 2, which is the only solution to the equation: 2 + 2 + 2 is 6. Students must follow the algebraic rule for substituting. The right side (10 - 4) is 6; therefore, the left side must equal 6. Thus, 6 = 6. 

Math is a major tool of science. An equation can be represented by symbols, pictures (i.e., graphs) or data tables.

Students should study math, especially equations and equation solving. But, to move forward to algebra, they need to master the basics of arithmetic such as whole numbers, integers, fractions, percentages, and ratios.


Learning how numbers work, calculating with numbers, and solving equations are important mathematics in early elementary school. 

In the first lesson for the 4th-grade classes (8-8-18), I introduced a system of three equations, which requires logical reasoning, knowledge of algebraic substitution, and some basic arithmetic. I meet with kids once a week for an hour in my Teach Kids Algebra program.  

z + x = 13
y + y = 14
z + y = 12
x =
y =
z =

==============
A quadratic equation defines an up-side-down parabola at the water fountain.



©2018 LT/ThinkAlgebra