Showing posts with label science education. Show all posts
Showing posts with label science education. Show all posts

Saturday, March 17, 2018

Why the "Worst" Students Need the Best Teachers


Imagine having a daughter with chronic illness. Perhaps you have already tried medication or surgeries to no avail, and it is clear that resolving their ailment will be a struggle.

Naturally, you seek out the best physician you can find- an experienced specialist with an outstanding record of success. 

Now, what if upon examination, the doctor decided that they had "served their time" with difficult patients like your daughter and they wanted only serve the most amenable? 

Your little girl would be left in a state of "needs improvement" while the healthiest patients got expert, specialized care. While I hope the contrived scenario does not exist in the healthcare profession, it is certainly alive and well in secondary education. 


There is an unspoken hierarchy in high schools I've experienced during my 12 years in education: the newest teachers in a school get the hardest-to-handle classes, are more likely to teach inclusion courses, and have less power over which subjects they will teach.

As I have heard veterans say, only after "serving your time" (as if it were a prison sentence), can you work your way up to teaching advanced classes or the electives where classroom management is less of a burden and intrinsic motivation is high. 

The neediest (both cognitively and socioeconomically) children are often scorned by the the educators most qualified to assist them via increased pedagogical knowledge and well-established classroom management practices. 

"I can't relate to those kids."

"I just don't have the patience anymore."

"I want to teach students who actually want to learn."

I have shared these sentiments in the past, so no judgement.


Although a humorous meme, there is often a
sobering, underlying reason for "bad" behavior
I, too, am coming from a place of teaching all Advanced Placement and honors courses, and I formerly felt entitled.

I started my high school teaching career floating around the building with no classroom while working with the lowest pupils in the school, but I had "proven myself" and enjoyed no longer having to battle incessant talking, high absenteeism and student disrespect. 

I resolutely evidenced myself capable, and now "those students" were a task for the newcomers. 

In addition to pay and workload issues, I have no doubt that this practice contributes to the 20% attrition rate of teachers in their first three years.

As I changed schools mid-year this past January, I found myself to be the "new teacher" for the first time in over a decade, and as such, I was placed teaching the lowest classes. 

Been there, done that. 

I was so happy to have a job close to home and with decent pay and benefits that I put my ego aside and took up the task wholeheartedly.

I had forgotten some of the frustrations that come with at-risk students- taking work to ISS, contacting parents more frequently, having hallway conferences with belligerent kids only to learn of some fresh hell going on in their home lives, and most importantly, how to teach struggling learners with deficits in reading and prior knowledge.

Getting kids to pass the AP Chemistry exam is a cakewalk in comparison.

However, I had also forgotten the joy of really making a difference with students that need it most. In the last three months I have had the pleasure of the following experience with the kids in the "worst" classes at my school:


Seeing a English language learner student's face light up brighter than the bulbs in his circuit last week as he feverishly put the wires and batteries together and blew his friends away. Even though he has to use a translating app on his phone for the most basic tasks, he could probably teach me a thing or two about electricity.


Watching a young lady on probation consistently score the highest grade on tests and quizzes. She had told me of her time in jail, and I have rarely had such a gratifying experience in the classroom than telling her that she was working her way to freedom in more ways than one.


Seeing the look of pride on a gifted young man's face who had failed his two previous science classes as I tell him how wonderful he's doing and how certain I am that he could have a career in science. I was told he ruin my class by previous teachers, and he certainly tried to initially, but I can now add him to the list of children I have positively impacted.

I could share more, but hopefully you see my point.

My skills and experience should be used where they are needed most, not as a justification for teaching the easiest classes and "best" students. 

The "worst" students are wonderful, kind, smart, and capable and they have already made me a better, happier teacher. If you have found yourself at the top of the instructional pecking order at your school, I would invite you to remind yourself of that occasionally as well. 

Cheers,

Brandie
   

Saturday, May 27, 2017

The 5 Best (and Worst) Things About Teaching Science



As we approach summer and leave our classrooms behind for a couple months, I realize that teaching science is an awesome gig, but it also has some pitfalls I've experienced firsthand this year. Indulge me while I reflect...

The Five Worst Things About Teaching Science

1. You may have to teach 30 students how to light a Bunsen burner incendiary device before they are old enough to drive a car.



2. The out-of-pocket costs for hands-on activities can get a little extreme, and you can catch some serious shade from the grocery store clerk for buying 32 bags of M&M's at the same time, even though you tell her they aren't all for you. 



3. Politics and opinions can inhibit your ability to objectively teach climate change, evolution, and deep time. 

"Mrs. Freeman, do you believe that dinosaurs actually existed?" 

Um, YES! 

4. The time required for prepping and cleaning up labs can rack up some serious overtime hours.


I wish it were as easy as adding food dye to flasks! SMH.

5. There's always one or two (or seven)
 kids that would rather walk across hot coals than wear safety goggles. 



Say it with me now, "PUT YOUR GOGGLES BACK ON!" 
Ah, a phrase I shall not utter again until August...

The Five Best Things about Teaching Science

1. You can say things like "I need more alcohol for my lesson" and not get fired. 
2. You get to boggle kids' minds like a magician, but *bonus* you get to have the pleasure of explaining your tricks.



3. You get to wear a spiffy lab coat and goggles. Who else gets to look this cool at work?



4. Your lessons get to involve food! Whether it's making ice cream for a colligative properties lab, using goldfish in your data collection lesson, or popping corn to teach mass percent; other subjects may have class parties, but you you've got snacks with a purpose. 



5. You get paid to blow things up. Enough said.




Regardless of it's ups and downs, we all know science teachers have the best job. Happy summer, fellow science teachers!

Cheers,
Brandie 

Thursday, April 20, 2017

What is El Nino, Anyway? A 5E Lesson Plan


And... that's about the extent of most people's understanding of El Nino.

I must confess that I too used to be just as clueless, and it wasn't until I took courses on meteorology and climatology in grad school that I understood what was actually occurring. We can do better for our students! So, in celebration of Earth Day (April 22nd), I wanted to share with you one of my favorite earth science lessons.

Here is a 5E (engage, explore, explain, elaborate and evaluate) lesson plan to help get it done. 

Engage

The 2015-16 El Nino was the strongest in almost two decades, causing wildfires and drought in Southeast Asia and heavy rains and flooding in the Eastern Pacific.

To get your students engaged, begin with real-world emotional connections via news reports showing drought and wildfires in Indonesia:



And flooding and mudslides in previously drought-stricken California:

After watching these clips, a class discussion to probe students for prior knowledge could include questions like:

-Geographically, how are these locations related (use maps as needed)?
-What do you think is causing this?
-Did you notice anything out of the ordinary about our local weather patterns last winter during El Nino conditions?

Explore

The epitaph on my tombstone will read "explore before explain." 

If at all possible, before doing a whole-class demonstration or lecture, allow the students to make a small version of the Pacific Ocean using this quick modeling activity (perfect for NGSS Science and Engineering Practices) from NOAA. Plastic shoe box containers can be used and purchased in a class-sized 12-pack, and students can bring in hairdryers from home for the day.  

Explain

A large-scale class demonstration at this point is extremely useful before moving onto any 2-D texts or diagrams. I use a cheap 10 gallon aquarium (I've had the same one for 8 years), vegetable oil, blue food coloring, a hair dryer and water. If you would like to add some faux detritus (dead stuff) to the ocean floor, sprinkle in some fish food or some Italian dressing; the particles will sink to bottom and help simulate the nutrient-rich deep ocean water. If you're lucky, some particles will upwell when you turn on the hair dryer. Check out the details in this video:



You may also find this recorded class discussion that scaffolds an understanding of high and low pressure useful if your students have not mastered those concepts yet:


Elaborate

Once students have a basic spatial understanding of what is occurring in the ocean, they can elaborate with the Can We Blame El Nino for these Events? online interactive. It goes deeper (haha) into the inner-workings of the thermocline, ocean height and temperature. My favorite part is that they get to examine the weather anomalies for the continental United States, and hone in on their hometown. 

Thermocline illustration from Can We Blame El Nino?
Evaluate

As ticket out the door, students can draw a side view of the Pacific ocean including trade winds, surface temperatures, and air pressures. For example (source):


To differentiate for younger ages or students that need additional help, you could use a pre-drawn picture and remove certain pieces information to make it a cloze exercise. For example, you could remove the words "warmer," "cooler," or "reversed."

As a summative assessment, students could research and create five-day forecasts for your local area that detail how the conditions would vary during a La Nina or El Nino. For example, Georgia's winters are warmer and dryer during La Nina, so a student's weather report would have higher temperatures and little precipitation with references to normal conditions.  


Happy Earth Day, and be on the lookout for "Godzilla" El Ninos!

Cheers,

Brandie 





Wednesday, April 5, 2017

An Open Letter to Teachers on the Heartland Institute Mailings


Dear Fellow Science Teachers, 

If the book pictured here, Why Scientists Disagree about Global Warming doesn't look familiar, it soon will. The Heartland Institute (HI), an organization heavily funded by the Koch brothers and fossil fuel companies such as Exxon has started distributing a packet of propaganda in waves to all science teachers in the country with the goal of reaching 200,000 educators. The story was already picked up by Frontline and the Washington Post

As someone who has taught college-level (Advanced Placement) environmental science for nine years, served on the Board for the Georgia Science Teachers Association, and has inspired dozens of my students to pursue scientific careers, I do not take the condition of our planet, the tremendous importance of science education, or the accuracy of the information I purvey in my classroom lightly.

The Heartland Institute sent their unabashedly biased propaganda to the wrong person. Frankly, I mourn the trees used in this poorly executed effort to undermine quality science education.

Although an outstanding and concise guide for teachers has been created by National Center for Science Education, I read every word of Why Scientists Disagree about Global Warming, and wanted to give my fellow educators a chapter-by-chapter synopsis, lest anyone be led astray or be left with a inkling of doubt about the illegitimacy of its contents.

Foreword

The first paragraph of this text is a mention of ISIS in a sensationalist attempt at distracting the reader from the topic of the book, climate change:

"President Barack Obama and his followers have repeatedly declared that climate change is the "greatest threat facing mankind." This while ISIS is beheading innocent people, displacing millions from their homeland, and engaging in global acts of mass murder" (p. xi).

Contrary to common belief, it is possible as a human being to be concurrently concerned with more than one global issue. But, to the Heartland Institute, it sounds like ISIS trumps climate change in importance. 

Fair enough. 

Yet, on their own website advertising this book, they contradict themselves in the first two paragraphs. See below: 



So, is it ISIS or climate change denial, Heartland? My bet is on whichever causes the most fear-mongering at the time. 

The foreword goes on to discuss the Clean Power Plan, an Obama-era legislation aimed at reducing carbon emissions, using hyperbolic language to describe that it will "dramatically increase costs" and "destroy millions of jobs" (p. xii). 

The plan was rolled back via an executive order by Trump on Tuesday, March 28th. Teachers began receiving the mailings of this book the week prior. I do not believe that's a coincidence - just like it's not a coincidence this mailing was funded by fossil fuel companies.

Introduction

The introduction lists some temporarily-compelling arguments that fly in the face of accepted evidence for anthropogenic (human-caused) climate change, until one turns to the end of the section and notices that HALF the citations (p. 4-5) are from the Heartland Institute- that's right, the same organization that created the mailings. This self-citation, as it turned out, was a foreshadowing of the echo chamber that was the rest of the book.

Chapter One: No Consensus
Let's start with this nugget: "Many prominent experts and probably (my emphasis) most working scientists disagree with the claims made by the United Nations' Intergovernmental Panel on Climate Change (IPCC)" (p. 7).

If "probably" means 0.01%, then we're golden:

During 2013 and 2014, only 4 of 69,406 authors of peer-reviewed articles on global warming, 0.0058% or 1 in 17,352, rejected AGW (anthropogenic global warming). Thus, the consensus on AGW among publishing scientists is above 99.99%, verging on unanimity.

Such flagrantly unsupported claims by HI probably aren't going to change the minds of the educated and well-qualified science teachers in the United States.

The literature review I cited was from March 2016 in the Bulletin of Science, Technology and Society. The first literature review they cite, which still showed "the scientific community is in overwhelming agreement" that the Earth's climate is being altered by human activities, is from 2004. It examined abstracts from 1993 to 2003. I have high school students that are younger than those most of those abstracts! Why would they use such an outdated source but choose to exclude a more recent, thorough one in their second edition? I'll let you decide. 

In fact, the rest of the chapter they try to cast doubt on scientific consensus, but it is apparent they fall short with these self-reported surveys and literature reviews from 2008 (notes here), 2009, 2010**, 2013***, and 2014 (p. 10-25).

Bray and Von Storch, who were mentioned for their work in 2010, published an updated survey in May of last year. This was their findings:



Now, if a schoolteacher with two children and a full-time job can find and share this up-to-date information easily, I beg you to tell me why three authors writing a book on climate change could not. Perhaps, it is because it doesn't demonstrate their point. Cherry picking at its finest!

Ironically, the chapter entitled "No Consensus" pointed me in the direction of sources that demonstrated an overwhelmingly solid consensus among climate scientists. Instead of reading Why Scientists Disagree, read the articles I posted above for yourself.

The chapter concludes with nauseating praise for the Global Warming Petition Project, a statement "signed by 31,478 American scientists" (p. 27) urging the United States to reject Kyoto Protocol (a 1997 international agreement meant to curb carbon emissions in order to mitigate climate change). The Petition Project was debunked by Snopes in this 2016 article

"It is misleading for the signatories to be considered climate scientists or even top researchers in their field, as some suggest. In fact, based on the group's own numbers, only 12% of the signers have degrees (of any kind) in earth, environmental, or atmospheric science. Further, the petition and its creators are not neutral parties, and the major entities supporting it can be easily described as politically motivated."

Chapter Two: Why Scientists Disagree

This chapter not only attempts to deface climate science, but well-established scientific practices, such as peer review. Yes, you read that right.

To introduce the second chapter, the authors claim that the disagreements "among those participating in the climate change debate may be sharper... than other topics" because it is interdisciplinary and involves insights from various fields such as geology, oceanography, physics, statistics, economics, etc. (p. 31-32). What a specious argument! Doesn't medicine involve biology, physics, chemistry, economics, and psychology? Perhaps we should start ignoring the work of medical researchers as well... 

Pages 35-36 are spent quoting a 1996 piece regarding uncertainty in climate science. Yep. It was written the same year the Olympics were in Atlanta. 

The legitimacy of the Intergovernmental Panel on Climate Change (IPCC) is questioned in the remainder of chapter two. If imitation is the greatest form of flattery, I can't help but wonder if the acronym NIPCC is so similar to IPCC in an attempt to give themselves clout through mimicry. Perhaps they had hopes that teachers may quickly glance at the subtitle and skip over the "N" in NIPCC and be more apt to trust the book's contents. We get paid to decipher handwriting for a living. Bad call.

The chart below, prepared by the National Center for Science Education, illustrates the differences between the two organizations.



Why Scientists Disagree uses the "harsh criticism" (p. 41) from the InterAcademy Council (IAC) as ammunition against the IPCC, but fails to mention that the IPCC invited the IAC to do an audit in order to strengthen their processes and procedures. Additionally, HI hoped we wouldn't do our homework and find that the IAC is a subsidiary of the InterAcademy Partnership, an organization that has issued statements in favor of mitigating climate change for the sake of human health, reducing deforestation to combat rising carbon in the atmosphere, and curbing ocean acidification due to increased carbon dioxide from human emissions.

Another omitted inconvenient truth I suppose.

Chapter 2 not only attempts to discredit climate research but scientific research in general. Let that soak in. It does so by misusing a flawed medical journal article by John Ioanndis with the sensationalist title "Why most published research findings are false": 

"Ioannidis work generated widespread awareness that peer review is no guarantee of the accuracy or value of a research paper" (p. 48). 

The article wasn't sufficiently widespread to make me aware peer review was meritless. How about you? If that wasn't enough, the concluding remark of the chapter will make any science teacher's skin crawl:

"While it would be ideal if scientists could be relied on to deliver unvarnished truth about complex scientific matters to governments and voters, the truth is they almost always fall short" (p. 52).

Who needs scientists when oil executives give our legislators all the information (and lobbying funds) they need anyway?


Chapter 3: Scientific Method vs. Political Science

Coming in at less than five pages long, this chapter literally and figuratively lacks content. It begins by saying the IPCC's reports are invalid because their "implicit" hypotheses about AGW contain no entertainment of a null hypothesis (p.56). 

Why would they? They contain no hypotheses at all (and shouldn't) because the IPCC is NOT performing any experiments! That's why HI had to use the word implicit to describe them. The IPCC's purpose is to have "climate experts from around the world synthesize the most recent climate science findings every five to seven years... It does not carry out new research or monitor climate-related data." 

The authors go on to attempt to discredit climate scientists because they are victims of confirmation bias (the tendency to use new information to confirm what you already believe). They purport "the only way to avoid confirmation bias is [the] independent review of a scientist's work by other scientists... This sort of review is conspicuously absent in the climate change debate" (p. 58-59).

Oh wait, isn't that called peer review? Face palm.

Chapter 4: Flawed Projections

Teachers, have you ever had a student turn in a research paper, but failed to reference any sources other than themselves? Welcome to chapter 4. Here, the authors create laundry lists of "facts" concerning global climate models, temperature forcings and feedbacks, climate sensitivity and then cite only the Heartland Institute. 

Unbelievable. 

Let's take a closer look at the bottom of page 63, for example:



If that weren't enough, they discuss (p. 66-69) a 2015 Monckton et al. journal article to support the idea that the climate is not as sensitive to carbon dioxide as the IPCC claims. They failed to inform the reader that the paper was discredited because of its over-simplicity and "numerous glaring fundamental errors."

I found it humorous that the chart on page 71 conveniently lacks any temperature data from the last 20 years! See for yourself:


Chapter 5: False Postulates

The purposeful selection of outdated information continues in chapter 5. A cursory glance at the references (p. 84-86) reveals that the peer-reviewed articles they employed are, on average, over 15 years old. Consequently, it comes as no surprise that Figure 10 appears to contain data only up until 2000, but if you look closely, the data is really only displayed on the graph until the mid-1900's (p. 76):

Here's an updated graph from NOAA for comparison which helps to explain why HI's chosen data set conspicously omits the consistent warming present over the last four decades:



My *favorite* glaring misuse of data from the authors is when they cite the increase of world grain to suggest that such increases "would be unlikely if rising carbon dioxide levels produced more harms than benefits to the biosphere." (p. 83)


As it turns out, crop yields have steadily increased since the late 1940's due Green Revolution agricultural practices such as mechanization and the increased use of fertilizer, pesticides and irrigation. I do need to give the authors credit for correctly stating that plants prefer conditions with warmer temperatures and carbon dioxide. Bravo. 

Unfortunately, worldwide flooding and drought due to climate change will cause soil degradation and decreased crop yields. The authors failed to mention famine and starvation, however. 

Chapters 6 and 7 continue on with citing Heartland Institute for climate "facts" and making pleas to politicians to use sources other than IPCC data and turn their attention to the "real problems" in their respective countries. (p. 101)

Finally teacher friends, thank you educating the youth of America in a time where ignorance and intolerance are as abundant as atmospheric carbon. Even though this book may make you so angry you want burn it, please don't. Combustion creates carbon dioxide which actually DOES cause climate change. 

Cheers,
Brandie

P.S. If you would like read a legitimate book about climate change denial, check out The Madhouse Effect. To help my students visually understand the global urgency of this issue, I utilize the documentary Before the Flood in my climate unit. Also, if you need vetted lesson plans and teaching resources, see what NSTA has gathered for you.



Notes:
*All pages listed are from: 
Idso, Craig D., R. M. Carter, and S. Fred Singer. Why Scientists         Disagree about Global Warming: The NIPCC Report on Scientific       Consensus. 2nd ed. Arlington Height, IL: Published for the           Nongovernmental International Panel on Climate Change (NIPCC) by     the Heartland Institute, 2016. Print.

**I would agree that this survey was poorly executed.

***I found it distasteful that they called the author, John Cook, a faculty member at George Mason University and a textbook author a "wacky Australian blogger." 

Wednesday, March 15, 2017

Low Stress Chemistry with "Hands-On" Stoichiometry


Here is an accurate visual for representing how the word "stoichiometry" makes most people feel. 

The purpose of this blog is to help other teachers reduce the stress in their lives and to allow me to reflect and continue my own personal growth. In that vein, any chemistry teacher can tell you that stoichiometry is easily one of the most frustrating topics to instruct, so I wanted to share a strategy I created that has been well-received by both my students and fellow educators. 

In addition to making our jobs easier, I also think it is critical to reduce rote learning via the use of algorithmic flowcharts that do not foster conceptual understanding and may lead to confusion if not used properly.  



After seeing my lowest students internalize molar conversions kinesthetically, even after the marker ink on their hands has washed away, I will never go back. As I mentioned in the condensed video below, the parts of our brains that process numerical representation also control our finger movement. So, a literal hands-on approach is a great way to help students that struggle in math be successful in stoichiometry. I invite you to try it yourself; the ten minutes you are about to invest will be returned with fewer paper corrections and tutoring sessions. I promise!





Here are some quick tips for pulling this off from my experience and other teachers' feedback:

1. Students with sensory processing issues may find the marker on their skin unbearable. In this situation, you can give them the handout I used in the video. If a students' parents would prefer they not write on their hands, disposable gloves can also be used (and reused for the duration of the unit).

2. It is best not to have students fold their fingers down while converting lest birds be shot in your classroom. Kids will be kids, and we have enough behavior issues to handle already.

3. Each lesson, add a new type of conversion instead of starting with all three fingers labeled at the beginning. The first day, for example, students may only have particles (formula units, atoms, and molecules) and moles on their hand. The next day, grams can be written and utilized. 

4. Fine-tipped washable markers work well for this activity because they are the least permanent and the kids enjoy the colors available. Plus, they are less likely to vanish from your room than Sharpies. 

If you are looking for the worksheet link to the practice problems I used, look no more.

I wish you the best of luck and a mole of A's on your next stoich test. Cheers,

Brandie