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

Monday, May 23, 2011

Erythrodiplax berenice

Yesterday I did one the most enjoyable bikes rides in a while. I rode with a friend who is the science teacher at another international school in Barcelona, VE. We were both working in the Gallup, NM area at the same time, but never crossed paths that I can recall. 

Anyway, as science teachers, we had a lot to talk about and share when riding. I showed him some trails he wasn't familiar with. We stopped at several places along the ride including at a point overlooking the sea and watched wave phenomenon from above (100 meters up) and related it to our classroom lessons.

The highlight of the ride was near the end when encountered thousands of dragonflies. I've been riding the El Morro area for about 10 years and had never witnessed an emergence of dragonflies. I was curious about them. I kept thinking about a water source where the nymphs would live. There were no freshwater sources in the area, so my only conclusion was the sea. These must be marine dragonflies, so that's what I Googled ("marine dragonfly") and I came up with Erythrodiplax berenice. Good match! The specimens flying around yesterday looked very much like the gold and black variety shown in the the photo and link. Very cool!
Mountain biking gives me the opportunity to get to places to observe nature when I probably wouldn't have gone otherwise. I enjoy the challenge of singletrack climbs and descents, and the social aspect of it is a bonus.

Thursday, September 30, 2010

Things That Fly: the Delta Dart

Delta Dart
I have an after school club with a few students and its called "Things That Fly". Right now we are building Delta Darts. I built one beforehand so I'd know where the technical parts of the build are (mostly the cutting of balsa wood) and to motivate the students.

This afternoon I wound up the rubberband a couple of hundred twists and let her fly!
climbing

turning

easily clearing the basketball court covering
 It climbed to altitude, higher than the basketball court covering (about 8 meters/25 feet).
saved by the tree
 Thought I lost it on the roof but it came gliding down and got snagged in a tree where I recovered it.
my assistant



landing

recovery


It took a few more flights after that. Good fun!

Tuesday, March 23, 2010

My Bamboo Skewer Box Kite

I haven't built anything creative in quite a while. I used to be famous at my school for my creations. I've built all sorts of stuff from everyday, low-cost materials. Probably the most sophisticated thing I've built is my wind tunnel which really works and is very precise.

Wednesday at school we are having our "Spring Fling" and I am on the kite making team, so I worked with the elementary students on making simple kites.

Back in kite mode got me thinking...

Box kites: Then...I remember my brother having a box kite and I always thought it was cool. I first tried to build one from scratch about 30 years ago, but it didn't work out too well.

Now...On the Fausto Trail on El Morro is a frame to an old box kite that somehow ended up there. Who knows how long its been there, but each time I ride past it, I look at it noting its construction. It is very strong for being around as long as it has, so I've tried to duplicate the design using bamboo skewers used for kabobs.

The prototype...
Yesterday I built a box kite from drinking straws just to see if I could. I built it in about 45 minutes and it worked okay until the drinking straws started bending from the gusts of wind. I decided I could use the same dimensions and build one out of sturdier bamboo skewers. Here's how I did it:

1. I cut off the pointy ends of 12 skewers so each stick is 26 cm.

2. To make the long sticks, I overlapped them about 2 cm for a length of about 50 cm. They were glued and lashed together with cotton string.

3. The cross pieces are also 26 cm, so they cross at 13 cm. I made a little notch at 13 cm then glued and lashed them together with the cotton string, and lathered on more white glue.

4. The long sticks were notched at 6.5 cm from each end and the crossed pieces were glued onto the long pieces. The glue was allow to dry, then reinforced with a paper/white glue gussets.

5. The cross pieces make little triangle with legs each 13 cm long. The string which wraps around the frame for stiffness and strength creates a hypotenuse of 18.5 cm on each side. The perimeter around the frame is about 74 cm. The string should be cut at 1 m in length so you can tie it off.

6. The perimeter coincidentally was the was right sized for the little grocery bag I was using without having to cut and retape together. The width of the plastic is 13 cm. I just slipped the plastic over the frame for a snug fit. I used stick glue to glue the plastic on to the frame and string guys. I just eyeballed the width and it seemed right.

7. The bridal is about 75 cm in length tied to two corners; one top, one bottom.

Total weight is probably about 25 grams. I need to confirm that tomorrow.

Anyway...it flys!

Wednesday, February 24, 2010

The Cycad Next Door

In my middle school science class, we are covering plants. When looking at the different kind of gymnosperms, cycads are one of the ancient groups. Fossil records show these plants have been around for nearly 300 million years!

To be honest, growing up in New Mexico, I'd never seen a cycad, only in pictures. The textbook has a picture of a cycad tree, and it looked very familiar. Last week, when I am walking from school, back to my apartment, there is a cycad! I took several pictures to add in my PowerPoint presentation for the next day.
Here's some new growth in the middle taken last Thursday on 02/18/10

Today, Wednesday (02/24/10) as I walked by it, I decided I look at it again and the new growth in the middle has grown at least 30 cm in about 6 days! Amazing!
Details!

Tuesday, September 22, 2009

Happy Equinox Experiment

Happy Equinox!

Note: If I would have done this experiment right, I would have done it right at high noon, instead I spaced it out did it about 12:15 local time, so the sun was already past its zenith a couple of degrees.

My experiment is simple, have a meter stick vertical and measure its shadow. The tangent of the angle should equal my degrees latitude north.
19 cm/100cm = 0.19
cotangent 19 = 10 degrees, 45 minutes N.

According to Google Earth, our location is actually 8 degrees, 53 minutes N. So the 2 degree error corresponds with the sun being across the zenith a couple of degrees. Also error could have creeped in anywhere, e.g., was the meter stick vertical, were my measures accurate, etc.?

Anyway...just goofing around.

Saturday, September 05, 2009

A Visit to the Past: The Four Corners of my Old Classroom

Today I was at the old ELA building moving stuff. This is the school is where I have spent the longest period of time at one location, from 2001 to 2007. This is my old science room.

View 1: from the doorway. The dolphin mural was painted by some Norwegian students I had back in 2001.
View 2: from the dolphin back to the door. The new counter with sink is visible. This was a luxury. I only got to use this set-up one year or so. For many years I taught science in this room (good science) with nothing but creativity and innovation.

View 3: From the corner to the whiteboards. I spent most of my time in front of the whiteboards during my lecture periods.

View 4: From the whiteboards to the corner. Another look at the counter with underneath storage.

I had fun in that classroom.

Monday, August 24, 2009

New School Year Starts

Today was the first for the new school year. This marks my 21st year teaching and 10th year teaching overseas.

I had a good summer break. My visit back home to New Mexico was great, but of course did not get to see everyone I wanted to see and do all I wanted to do. Never did get to do the backyard BBQ for my mom...she was real disappointed. I need to make that up to her.

Tania and I didn't get to go on our trip to Dominica, because its like going to the moon. Very remote. We hope we are only putting it on hold till Christmas.

Hopefully will be picking up on the blogging again. Things are getting crazy here in Venezuela. Today the Mitsubishi automobile plant was forced to close. I'll put a link here to one of my favorite blogs so you can get an idea of how things are shaping up in the country. Nuts!

Tuesday, January 13, 2009

Teachers that Influence Our Lives: A Tribute to Mrs. Naomi Garwood

I work in a profession where most of my colleagues are highly educated. Most of us have two maybe even three professional degrees. Some have even more. Most of us have hours beyond our graduate degrees, yet in our profession, we are almost second class citizens. Most of us are extremely caring. We are passionate about what we do. Yet a lot of people do not hold our profession in high regard. It is a profession where every layman has an opinion and considers themselves an expert and thinks that they have a better way or a better solution.

Teaching is a rewarding career, but it can be extremely frustrating, political, very stressful, and difficult. Why would anyone want to do it? Some say, "June, July, and August". Sure the breaks are nice, but also necessary. I think anyone would go insane without them, and in reality, a lot of teachers will have second jobs during the summer and/or will be taking summer classes, working on their masters degrees or gaining more post graduate hours, in order to claw their way up the pay scale.
****
Teachers are important! They shape our lives. They mold our minds. They make us think. They influence who we are to become.
****
In my days as a grade school student, I can think of my favorite teachers, teachers who had a real positive impact on my life; unknowingly putting my life on a path I didn't know I was on until much later. Looking back, the teacher who influenced me the most, the person who gave me a curiosity about science and of a world of travel and adventure, was my 7th grade science teacher; Naomi Garwood.

It is hard to remember a lot of details about 7th grade, when a person is 12 years old , especially when they are now 48...it was a long time ago. But I remember Mrs. Garwood as a kind lady who loved teaching science. She seemed old at the time, but looking back at it now, she was about the same age as I am now.

Mrs. Garwood was the first person I knew that had lived outside the United States. She and her husband had worked as international teachers in Thailand and in Bolivia. I remember her talking about Bolivia in class. I remember being in awe by these stories. I believe she showed us slides of the giant Nazca drawings in the desert of Peru. I can vaguely remember her showing us slides of all sort of interesting things she saw and did in South America. It gave me a real curiosity of the place.
****
Today I was yakking to my high school students about what they need to do in class today, to be prepared for university in the future. Somehow I got off on the tangent of the convoluted tale about my days in college and of how I became a teacher and the people who influenced me the most in choosing my profession; my grandfather, an educator/administrator for 60 years! And Mrs. Garwood...a teacher who loved science, loved her students, and loved adventure!
****
My first few years as a teacher, something was gnawing at me. I was never satisfied where I was. I was always wanting a different experience. I loved/love the Navajo Indian Reservation. It was/is as about as close to a South America-like experience as one could get without leaving the comfort of the USA.

After a few years on the Rez, I moved back to my hometown and tried public school and found it sucked! The students I had were enjoyable and good for the most part. There were some messed up students coming from messed up situations, but I could deal with that. I could accept that...It was my job to try to make things better for the student. What was really horrible about public schools were the administrators! EGAD! I could not take it after a while. I quit and tried my hand at entrepreneurship. When that failed, it was back to school teaching eventually, and I decided to go back where I was the happiest...the REZ!

My second gig on the Rez was great, but still there was this thing gnawing at me. I wanted more. I wanted to go to South America like Mrs. Garwood. So one day, I started the process, took the leap and went to a job fair and landed in Venezuela (boy howdy!). I met the woman of my dreams here and have had a great number of adventures...except I have not seen the Nazca drawings in Peru...yet.
****
I have kept Mrs. Garwood in my mind my whole career. I always wanted to be a teacher like her; caring, interesting, competent.
****
After my students left today, I had a free period, so I did an Internet search on Mrs. Garwood. I found her obituary in the Albuquerque Journal. She died on September 3, 2008! I was shocked! Mainly because she had died so recently, especially when I was in Albuquerque in August. I cried right there at my desk. I felt so sad, and felt a deep sense of loss. I had no idea she lived in Albuquerque. If I would have known, I believe I would have tried to contact her. It would have been nice to visit with her and tell her of her influence on me and my career and life choice.

Thank you Mrs. Garwood!
You'll be missed.

PS: I still have that small Bolivian wool rug/wall hanging you gave me at the end of the school year.