A new type of extinguisher that uses sound waves to put out fires has been built by two engineering students in the US. Both chemical- and water-free, the invention offers a relatively non-destructive method of fire control, which could find applications in fighting small fires in the home, and the researchers now hold a preliminary patent application for their device.
While the concept of using sound waves to extinguish flames is not new, previous attempts to realize the principle – including efforts by teams at West Georgia University and the US Defense Advanced Research Projects Agency (DARPA) – had not been successful.
Undeterred by this, as well as initial [...]
Over the last few years I’ve seen more schools opening up access to YouTube, at least to teachers, than I had in the past. YouTube for Schools has partially contributed to that trend. Tools like ViewPure and Watchkin have made using YouTube videos in schools a little less scary too. All that said, there are still lots of schools that block access to YouTube. That’s why a few years ago I started to maintain a list of alternatives to YouTube.
This week I updated my list of alternatives to YouTube. I removed some options that have disappeared and edited information about sites that have changed. The updated list and video search engine can be found [...]
On Saturday my granddaughter and I were making latkes for the family Hanukah celebration. After peeling ten pounds of potatoes and grinding them up with three pounds of onions, we took a break and talked about school. This is the interview with my granddaughter, a fifth-grader discusses Common Core.
Where do you live? I live in Brooklyn, New York.
How old are you? Ten-years-old.
What grade are you in in school? Fifth grade.
What subjects do you have in fifth grade? Some subjects I have every day. Reading, writing, social studies, and math. Some subjects I have only one day a week. Monday I have art. On Tuesday I have acting. On Wednesday I have science. [...]
On December 17, 2014 I participated in a forum at Uniondale High School in Uniondale, New York on “Policing in America: Should Uniondale Care about Ferguson?” It was organized by social studies teacher Adeola Tella-Williams and students in her Participation in Government class. The student population at Uniondale High School is almost 100% Black and Latino, and as it became clear at the forum, students felt the death by police of Michael Brown, an eighteen-year Black teenager in Ferguson, Missouri, on a very personal level. Ms. Tella-Williams is a former master’s student at Hofstra University and a cooperating teacher in the Hofstra teacher education program. [...]
I hesitated to write about the December 20 murder of two New York City policemen. I needed more information, to see how political events played out, time to think, and as Cardinal Timothy Dolan so eloquently stated in his homily the next day, it was time to “mourn the brutal and irrational execution of two young, promising, devoted police officers, Rafael Ramos and Wenjian Liu.” While mourning continues, I need to weigh in with my thoughts. At the end of this post I include a lesson idea designed for high school classes about policing in the United States.
Prior to the deaths of the two New York City police officers, in an opinion essay in the Daily News, Cardinal [...]
In response to my recent Huffington Post blogs critical of Common Core, some commentators have defended the Common Core and blamed opponents of high-stakes testing for distorting the public’s understanding of the benefits of the national standards. But when you look at the history of the push for national standards you realize Common Core is all about testing.
On January 8, 2002, President George W. Bush signed the No Child Left Behind (NCLB) Education Bill at Hamilton High School in Ohio. In a speech at the signing ceremony, Bush laid out the basis for what would become Common Core. He also made clear the connection between his goals for education in the United States [...]
Regular readers of my Huffington Post columns have seen my position on the national Common Core Standards change during the last two years. At first I opposed the standards as mandates but thought they could be useful as guidelines. When the standards were paired with high-stakes assessments, both for students and teachers, my opposition intensified. As a teacher and teacher educator, and as a parent and grandparent, when curriculum was rewritten and instruction became constant test prep, I was angry. In this and my next post I directly challenge the Common Core approach to teaching younger children to read and older students to better comprehend sophisticated written material. The [...]