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Tag Archives: STEM

Google’s drag-and-drop ‘Scratch’ doodle

As Google doodles become more interactive it’s fitting to see it launch Hour of Code with a drag-and-drop doodle. It’s their first Coding-based doodle. Have you tried it? It’s on today’s Google landing page.

Worth reading: A description by MIT’s Champika Fernando, who was on one of the 3 teams that built this doodle.

Hour of Code runs through this week, which is also Computer Science Education week, and the anniversary of 50 years of programming languages. Scratch was developed at MIT.

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SPACE Day promo video

 
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Posted by on October 24, 2017 in Ed-Tech, Education, STEM

 

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Another eclipse crowd-sourcing project captures sounds, not pictures

My wife and I were discussing the eclipse –her two-and-a-half year old Montessori students had been excited about it!– and wondered if animal behavior was being tracked.

So it was a pleasant surprise when I saw Ruben Gameros’ post today on FB about his participating in the Purdue University ‘sonic effects’ project. Their “huge, continental scale” project was to study how animals will respond to the solar eclipse. Using acoustic sensors (from Alaska to Puerto Rico) they invited citizen scientists to collect data –acoustic behavior of  birds, crickets, cicadas, and frogs.

Why record sounds? Purdue researchers are looking at if animals that are typically active during the day stop making sounds during an eclipse. Among other questions:

  • Are there patterns for birds, insects, mammals, amphibians, and even fish?
  • Are the changes in the circadian cycles different in coniferous forests, temperate deciduous forests, grasslands, and coastal ecosystems?
  • Is there a difference in behavior in the total eclipse zone compared to areas that are in the 90%, 80%, 70% and 60% or less zones?

Caltech had a different crowd-sourced project calling for eclipse-related animal behavior. It called for young scientists to make 3 observations during the event, and record it via a special App. It was supported by a teacher webinar, and a web-chat.

I wish students across the country would have been motivated to do more than look for the umbra and penumbra. Or dodge the event, entirely. (One school I know cancelled the viewing even after they ordered glasses.)

 
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Posted by on August 21, 2017 in Ed-Tech, Education, Social Media, STEM

 

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If only schools can be like this!

I just interviewed Kris Canekeratne, CEO of Virtusa, a 20,000-strong global business consulting and IT outsourcing company headquartered in Massachusetts. Among the many strands we talked about, I was fascinated by his take on learning, and how schools ought to be the ‘ignition’ for curiosity.

“Students have an innate proclivity to curiosity,” he says – no different how engineers are inherently curious, with problem-solving and design thinking as part of their skill set. If only we could design schools to be the spark plugs of knowledge! It’s time we began exposing students to Big Data, Nanotech, AI, user experience, and gamification, he says, instead of teaching them how to memorize material just to pass exams.

To this end, here’s an example of design-thinking class at a Charter School in Berkeley, California.

 
 

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Summer camp at Li’l Sprouts Montessori

 

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Solar oven Chili Cook-off returns as school winds down

For the second year, I’m holding the Solar Oven Chili Cook-off.

Nothing like bringing the school year to a close at the computer & tech lab, than something that does not involve batteries, software or screens. I think we have all had enough of that!

So let’s chow down and enjoy some class recipes!

  • Three 5th grade classes and three 6th grades will bring their own recipes and compete.
  • Next Tuesday’s temps should reach 105 degrees. The oven usually gets to 275 – 300 degrees, even without reflectors.
  • I’m bringing a Sri Lankan killer chili for those who dare!

Though this is the second annual Chili Cookoff, this is the third year of incorporating a solar oven project into my STEM curriculum, thanks to Solavore. We use the Solavore Sport ovens. In the picture, extreme right is Solavore founder and CEO, Ann Patterson.

 
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Posted by on May 19, 2017 in Arizona, Ed-Tech, Education, STEM

 

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Build a ‘Steady-hand Game’ for under $3

Here’s the device I constructed from mostly scrap material. It’s been called the ‘steady-hand game.’ The goal in this challenge is for the player to not to complete the circuit!

If any part of the metal wand touches the wire, it completes the circuit, which is connected to a rudimentary ‘fan’. Took me about 45 minutes to assemble the contraption.

I admit, the challenge was a tad too difficult. I could have made it easier, but it tends to be more fun if it triggers the fan. Perhaps for a younger group I could have straightened the wire, or bent back the metal ‘wings’.

Material: wood, scrap wire, duct tape, old plastic container, 9-volt battery, copper wire.

  • The Wand: Metal egg beater from the Dollar Store. Bend back some of the loops to create wing-like protrusions.
  • Fan: Made from an old CD, with a piece of Duct tape to cover the center hole. Pierce the tape with the top of the motor. Connect the positive and negative terminals of the motor to the battery
  • The motor. Available at any hobby store, Radio Shack, or online
  • Battery: Ideally a 9-volt battery. D-size battery will also work fine.

Expand the idea! While this is a great way to incorporate it into a unit about electricity and circuits, you could get some students to design an elaborate set up: More complex coils of wire, different size wands, and different circuits that set off off a bell, a light bulb, a buzzer, and a fan, depending on which circuit the wand touches.

 
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Posted by on April 30, 2017 in Ed-Tech, Education, STEM, Technology

 

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