X Bubbler: March 2011

Saturday, March 12, 2011

Break

Sorry I haven't blogged in a while.
Did you try the matrix questions?

I need to fix some typos but the answers are here now.

10 questions:
C A C A D || C C C D C

20 questions:
B C D C A || B C D B C || C C A D C || A C D B C

Tuesday, March 1, 2011

Matrices - Test yourself

This was one of the (easy) questions I gave in a first-year undergraduate matrix exam last year:

If you can answer that, try more test questions on matrices here.

In other news, Inception (a dream within a dream) won four at the Oscars and The Social Network (the technology startup film) won two.

Addiction

geometry

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Blog | Intellectual Mathematics

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Continuous Everywhere but Differentiable Nowhere

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1 year ago
Watch The Yard

Sigma Gamma Rho’s Tonya Williams Inducted into Canada’s Walk of Fame - Tonya Williams, actress, producer, activist, and proud member of Sigma Gamma Rho Sorority, Inc., has officially been inducted into Canada’s Walk of Fame,...
1 year ago
African Institute for Mathematical Sciences

AIMS Celebrates Renewed Funding for the University of Tübingen’s Cluster of Excellence in Machine Learning - The African Institute for Mathematical Sciences (AIMS) is delighted to share the exciting news that the Cluster of Excellence “Machine Learning: New Perspe...
1 year ago
Up Naira ... $weet '16

One dream ends - I asked AI to make a flag. (Second attempt) *Twenty years ago*, I was living in California, missing Nigeria, and so I created this blog, UpNaira, my s...
1 year ago
Facebook Research

Blog Post Test - An update from Meta Comms regarding UX research
1 year ago
SciStarter

SciStarter Celebrates 75 Years of the National Science Foundation with Nationwide Citizen Science and STEM Events - Interactive NSF STEM Day Events to Spotlight SciStarter and Science Near Me For Immediate Release– The U.S. National Science Foundation (NSF) marks its 7...
1 year ago
IBM THINK Blog

Preparing for the defence of the Realm - In light of current conflicts, the UK is now faced with real-world military decisions that will affect our immediate future. Ed Gillett and Col Chamber...
1 year ago
AMS Feature Column

What's the 411? -
1 year ago
Mathematical Moments :: AMS

Tapering AI Limits with Mathematcial Formalization - Dr. Alex Best, of Harmonic discusses AI's struggles with technical and ethical limitations like uninterpretable methods and a lack of diverse datasets make...
1 year ago
Piekniewski's blog

Singularity missed - Every now and then in the discussions of AI/AGI and what not comes the central figure of that entire intellectual movement - Ray Kurzweil. And with him i...
1 year ago
Howard University News

Ready for a Homecoming Anniversary 100 Years in the Making - Ready for a Homecoming Anniversary 100 Years in the Making Cedric.Mobley Tue, 10/08/2024 - 11:51 5 minutes
1 year ago
Educational Technology and Mobile Learning

Top Learn to Draw YouTube Channels - If you are looking for handy resources to help your kids and students learn to draw, the collection below has you covered. In it, I featured a carefully co...
1 year ago
Fractus Learning

The Future of Injection Molding: How Nicolet Plastics and Mantle 3D Is Accelerating Tooling Innovation - The injection molding industry is on the cusp of significant transformation, driven by the collaborative efforts of companies like Nicolet Plastics and Man...
2 years ago
Mathematics Learning

20 ideas of using Number cards - 20 ideas of using Number cards #rashkathmath #mathematics #math Number cards from 1 to 20 can be used for a variety of educational and recreational p...
2 years ago
SIAM Research Notes

Using k-mer Analysis to Understand Bacterial Genome Data - By Lina Sorg The DNA of all living species is comprised of genetic information known as genomes, which are written as sequences of nucleotide bases. Biolog...
2 years ago
SIAM Careers

Self-assessment and Personalized Projects in Math Classes Align Grading with Educational Values - By Jillian Kunze Math teachers generally hope that their students will develop skills in logic, reading, technology, research, and creativity, and grow an ...
2 years ago
SIAM News

SIAM Unwrapped - July 2024 - ...
2 years ago
Science - The Huffington Post

So, You Looked At The Eclipse Without Glasses. Are Your Eyes Doomed? - Don't ignore these subtle symptoms that could be signs of serious eye damage.
2 years ago
Education - The Huffington Post

'It's Been Devastating': A Q&A With The Top Librarian Fighting The GOP's Book Bans - "The weaponization of libraries ... is a bludgeon that’s scaring people everywhere," said American Library Association President Emily Drabinski.
2 years ago
Science is Beauty

😎 -
2 years ago
Google Research Blog

Generative AI to quantify uncertainty in weather forecasting - Posted by Lizao (Larry) Li, Software Engineer, and Rob Carver, Research Scientist, Google Research Accurate weather forecasts can have a direct impact on ...
2 years ago
Teen - The Huffington Post

New Study Reveals The 1 Simple, Free Activity That Can Improve Mental Health In Minutes - And the best part is, it's available wherever you live.
2 years ago
TienPhong :: Education :: News

Vietnamese student designs English-Vietnamese communication gloves for the hearing-impaired - With the help of artificial intelligence (AI), an 11th grade student from Quang Tri Province, north-central Vietnam has designed gloves that can help tra...
2 years ago
LinkedIn Engineering

Improving Recruiting Efficiency with a Hybrid Bulk Data Processing Framework - Co- Authors: Aditya Hedge and Saumi Bandyopadhyay 2022 was a year driven by change for the Talent Acquisition industry, with nearly 50k company mergers and...
2 years ago
Nick Higham

What Is the Spectral Radius of a Matrix? - The spectral radius of a square matrix is the largest absolute value of any eigenvalue of : For Hermitian matrices (or more generally normal matrices, thos...
2 years ago
notes on Ethereum by Vitalik Buterin

My techno-optimism -
2 years ago
Caltech Letters

We Do Our Homework: Caltech Graduate Students and Postdocs Should Form a Union - Courtesy of C/GPU *Viewpoint articles are a vehicle for members of the Caltech community to express their opinions on issues surrounding the interface of...
3 years ago
Free Technology for Teachers

Seven Mind Mapping Tools to Try This Year - Earlier this week a reader emailed me to ask for my suggestions for online mind mapping tools for her students to use this fall. My preference is often to...
3 years ago
opencalculus

opencalculus has moved to activecalculus.org - You can now find all previous posts — and, more importantly, all future posts — for this blog at https://activecalculus.org/blog/.
3 years ago
Running a Math Club: My Experiences

Two Hinged Triangle Geometry Walk Through - Setup Its time for another geometry walkthrough motivated this week by this interesting problem from James Tanton. "Two isosceles right triangles are hi...
3 years ago
I Speak Math

Mathstodon Prompt 4 – Let’s Share and DO MATH Today! - Today, my math peeps, we’re going to be sharing and maybe doing math! Is there a problem that you love having your kids work on? A favorite problem that ev...
3 years ago
On Teaching and Learning Mathematics

Three Mathematical Cultures: What Can We Learn? - Three Mathematical Cultures: What Can We Learn? Mark Saul July 2023 Everyone needs mathematics. It is the heavy industry of scientific development, the un...
3 years ago
Co-Creation Hub Nigeria

- Play Free Slot Machines Online and Make Money If you are looking to find online slot games for free, there are many options available to you. You can sea...
3 years ago
C. K. Raju's Blog

Ambedkar vs Periyar and conflating caste with race - My recent tweets (1) In the context of the foolish statement by the President of the Indian History Congress that Veda-s were created by Aryans who came fr...
3 years ago
X Bubbler

It's time... - but don't go away. Keep up with my other blogs. Read my books. Stay mathy. ✌
3 years ago
Learning with 'e's

War Child - It has been quite a while since I last posted anything on this blog. I guess it's the same for many folk right now, what with all that's been going on i...
4 years ago
The Earth Story

wicks-photo:Manly Beacon Trail Death Valley National Park - wicks-photo: Manly Beacon Trail Death Valley National Park
4 years ago
The Center of Math Blog

International Women's Day 2022 - Happy International Women's Day 2022. Let's take a look at some of the most influential mathematicians in history. *Hypatia* Despite there not...
4 years ago
The Anticareerist

Daftar Situs Judi Slot Online Terpercaya No 1 Indonesia - Content Game Judi Online Slot Gacor Jackpot Terbesar Hari Ini Pragmatic88 Game Slot Online Asian Fantasy Hal Positif Dalam Permainan Slot Online Akses Herc...
4 years ago
Axios

The U.K. just created a huge marine sanctuary in the remote South Atlantic - The waters around the remote inhabited island of Tristan da Cunha in the South Atlantic are set to become the world's fourth-largest marine sanctuary. *...
4 years ago
Ri :: Royal Institution

Ri Wrapped: 10 most-watched science talks of 2021 - Check out the most popular talks on neuroscience, physics, biology, and more.
4 years ago
inclusion/exclusion

Failing on its own terms - Mathematics is unreasonably effective. In several ways. And that’s dangerous. I am always surprised by the elegance of the Power Rule from Calculus. Humans...
4 years ago
Beyond Reviews: Inside MathSciNet

Where to send a paper - Suppose you have just written your first paper in an area and now you want to figure out where to send it. Maybe it’s your first paper ever. (If so, cong...
4 years ago
AMS Grad Blog

You should have a website (and it doesn’t have to be hard) - Some months ago, a conversation among graduate students at Emory turned to the topic of updating websites. A few of us had yet to make one, so I joked that...
4 years ago
nature.com blogs

Interactions: Ghina M. Halabi - Ghina M. Halabi is an astrophysicist and social entrepreneur, whose work lies at the intersection of science, entrepreneurship and education. During her Ph...
4 years ago
Capital Currents

Hiatus - Dear readers, I took this position as the Director of Government Relations in January of 2017 and my first blog posted shortly thereafter. I love researchi...
4 years ago
e-Mentoring Network

How to apply to and thrive in quantitative biology REUs - By Annamarie Leske and John T. Nardini Every summer, many undergraduate students spend 8 weeks conducting projects as part of a Research Experience for Und...
4 years ago
Indigenus

Nature India moves to nature.com - Nature India is now on nature.com. It is a return to where it all began for this regional portal of Nature Portfolio serving the scientific community of th...
4 years ago
Caltech student blog

We've Moved! - Hello everyone! Typepad has treated us well, but we've moved to https://caltechadmissions.blog. You'll find many of our old and new stories there. See you ...
4 years ago
dy/dan

Area Man Who Talks a Lot About Teaching Teaches His First Full Day in >10 Years - I have taught demo and observational classes regularly since I left full-time teaching but yesterday was the first time I taught every class for the day. L...
4 years ago
Education – The Nation Nigeria

Communities urged to seek peaceful resolution to farmers, herders clashes - Communities in the country have been advised to explore peaceful methods adopted by Otukpo in Benue State to curb farmers/herders clashes. According to a N...
5 years ago
Science Editors' Choice

Separating the stages of germination -
5 years ago
Traveling Thru History

10 Most Instagrammable Sites in Cambodia - Cambodia is full of amazing and beautiful sites. If you're looking for places to wow your followers, check out the most Instagrammable sites in Cambodia....
5 years ago
PhD + epsilon

TMI - Note: This is only one instance of students sharing I intend to discuss. In particular, coming up in future months are “mandatory reporting” instances, whi...
5 years ago
Blog on math blogs

iRashida: A Tour - iRashida, is a blog written by Rashida Hakim, a junior computer science student at Caltech, where she shares “problems and ponderings in physics and math, ...
5 years ago
Aerospace Engineering Blog

Podcast Ep. #49 – 9T Labs is Producing High-Performance Composite Materials Through 3D Printing - Martin Eichenhofer is the CEO & co-founder of 9T Labs, a company that was spun out of ETH Zürich in Switzerland. The company specialises in providing softw...
5 years ago
PhD Talk

Editorial: Diagnostic and Proof Load Tests on Bridges - I recenlty published an editorial for the jounal Frontiers in the Built Environment: Bridge Engineering on the topic "Diagnostic and Proof Load Tests on ...
5 years ago
edX Blog

Top Computer Science Careers and Skills & 10 Programs to Match - Demand for computer science roles has been rising for years. Under the lens of the pandemic, opportunities sharpen focus specifically in areas that help ...
5 years ago
Udemy Blog

CS YOU – Enabling Equal Opportunities in Customer Success - Three years ago, Sasha Green wasn’t expecting to get an email that changed her life, but she sure did need it. “I had hit a low point and desperately neede...
5 years ago
Math = Love

Monday Must Reads: Volume 66 - It's Monday! For my school, that means it's a distance learning drill day. We are face-to-face Tuesday through Friday. Each Monday, we have a distance lear...
5 years ago
Science and Research :: South China Morning Post

HKEX to surpass Nasdaq as king of biotech IPOs in 5 to 10 years, CEO says - Hong Kong will surpass the Nasdaq as the world’s largest biotechnology stock trading and fundraising centre within the next five to 10 years as Chinese sci...
6 years ago
ACM SIGGRAPH News

South African Author and Illustrator Trevor Romain to Keynote ACM SIGGRAPH Diversity and Inclusion Summit at SIGGRAPH 2020 - FOR IMMEDIATE RELEASE 7 August 2020 CHICAGO — As the SIGGRAPH 2020 North America conference goes to a virtual format starting on 17 August, 2020, the 3r...
6 years ago
Krissy Venosdale

Mini You Animation with Keynote - Put a little personal touch on your tutorial videos or just surprise students with a massive bobble-head version of yourself on their screens. Resources: A...
6 years ago
AMS News +

Just Equations Blog: A Tour -
6 years ago
GuardianTeach

Plans to reopen English primary schools before summer in disarray theguardian.com/education/2020… - Plans to reopen English primary schools before summer in disarray theguardian.com/education/2020…
6 years ago
Mother Nature Network

Forest products help power local economies - Billions of dollars and hundreds of thousands of jobs help weather tough times.
6 years ago
Math and Multimedia

Feeling stressed? Meditation apps see surge in group relaxation. - Feeling stressed? Meditation apps see surge in group relaxation. 22 April, 2020 | By Rachel Lerman Deep breath in. Many of us are stressed and trapped at...
6 years ago
Cosmos Magazine

Early disc galaxy puts theories in a spin - It’s huge and distant, so how did it form?
6 years ago
SpringerOpen blog

ICMNS 2020 – Digital (6th-7th of July 2020) - This year International Conference on Mathematical Neuroscience will be digital! It will take place 6th-7th of July 2020 For detailed information and reg...
6 years ago
interdisciplinary on reddit

Obtaining Equations of Motion: Newton vs Lagrange vs Hamilton - [image: Obtaining Equations of Motion: Newton vs Lagrange vs Hamilton] submitted by /u/Gereshes [link] [comments]
6 years ago
Google Student Blog

My Path to Google - Juan Angustia, Visual Designer - Welcome to the 43rd installment of our blog series “My Path to Google.” These are real stories from Googlers, interns, and alumni highlighting how they go...
6 years ago
Authentic Inquiry Maths

Start the Year with an Attitude Survey - Here in my part of Australia it is the end of Week 1, Term 1. Being a good teacher, I am always keen to get to know my new class quickly and to find out a...
6 years ago
BorschtWithAnna

Proof in a non-Geometry classroom - A beef that I have long had with the standard math curriculum is that for many students who don't take college math courses, proof is a weird one-off that ...
6 years ago
Khan Academy

20 educational gifts for all ages: Khan Academy team’s favorite toys, books, and games for learning - It’s the season of giving! We asked the Khan Academy content team to share the gifts they love to give the children in their lives. Find a special and ed...
6 years ago
ScienceBusiness.net

Harnessing digital technologies to improve healthcare in Norway - Harnessing digital technologies to improve healthcare in Norway Since November 2016, Science|Business and its institutional members have been organising c...
6 years ago
Homeschool Math Blog

Where do I start with Math Mammoth? - Where do I start with Math Mammoth? is a question I often hear (or read 😃 ). Most of the time, the best starting place is this page: https://www.mathmamm...
6 years ago
travelthroughhistory

ADVENTURES IN LONDON - [image: Add to Technorati Favorites]Usually I like to spend two or three days in London. I love going on the London Walks which are so interesting. I've be...
7 years ago
Games and Learning

New GamesandLearning.co Marks Evolution of GBL Work - The National Science Foundation has awarded GamesandLearning, Inc. one of its America’s Seed Fund grants to develop and test a new platform for identifying...
7 years ago
Book Ends

Why textbooks? - Do we really need textbooks? In this age of swelling enrolments in undergraduate math classes, students with diverse interests and backgrounds, new modes ...
7 years ago
scienceofus

What Is Autophagy? - Right when I’d gotten used to intermittent fasting…
7 years ago
CitizenSci

Book Review: Building a Foundation In Environmental Citizen Science - Dickinson, Janis L. & Bonney, Rick. (eds). Citizen Science: Public Participation in Environmental Research. Cornell University Press, 2012. 279 pages. Pape...
7 years ago
ThinkThankThunk

Dear Iowa BIG Students: 2019 - This is an open letter to current, former, and future Iowa BIG students. Sometimes you just need to make your position known. For someone who works at a sc...
7 years ago
Change Over Time

Home Depot STEM Activities - In December, we bought our first house! It's a cozy ranch style home with a nice-sized backyard. We STILL haven't unpacked all of the boxes. We have a cou...
7 years ago
AIMS Center for Math and Science Education

A Radical Theory Part 1: The Main Ideas - This is Part 1 of a series of articles about Radical Constructivism. The introduction can be found HERE The Big Question Sometimes we ask silly questions. ...
7 years ago
f(t)

Last Post for 250 Miles - Hi everybody, I have reached the end of my rope with Blogger, and have moved all the contents of this blog to a shiny new location. Any new posts after tod...
7 years ago
Math Teacher Mambo

Calculus Extras... - One of the fun things about learning calculus in high school is that as a student you get to refresh your memory and pull from your memory and create sweat...
7 years ago
Harvard College Student Blogs

La Vie en Rose: My Decision to Study Abroad - I wasn’t sure about a lot of things when I first came to Harvard. Continue reading about La Vie en Rose: My Decision to Study Abroad HFGP, study abroad, ...
7 years ago
Renaissance Headquarters

Fighting Perfectionism - I have noticed that I have a problem with perfectionism that prevents me from getting things done. In this post, I am going to talk about how I am going ...
7 years ago
Education-Related efforts at Google

Our 10th Doodle 4 Google winner is dino-mite - Ten years ago, for the very first Doodle 4 Google contest, we asked students “what if?” A decade later, we’ve been privileged to receive hundreds of thou...
8 years ago
Next Einstein Forum

Feeding the world, preserving the world - The Plenary session on Feeding the world, preserving the world focused on various aspect and contributing factors of food security in Africa. The session...
8 years ago
Edutopia

Setting Up Effective Group Work - Truly collaborative group work is complex and messy, so we have a few tips and tools to get students working interdependently.
8 years ago
Middle School Math Rules!

Create a Classroom Setup Kit - One of the best ideas I had a few years ago was to create a kit of all the necessary supplies I would need to get my classroom set up in August. There i...
9 years ago
Math Game Time

16 All-Star Math Games for Kids - Are you looking for math games designed to spark kids’ interests? If they’re sports fans, then you’ve come to the right place! We’ve rounded up the most ex...
9 years ago
Visual Insight

Romik’s Ambidextrous Sofa - The *ambidextrous moving sofa problem* is to find the planar shape of maximal area that can negotiate right-angled turns both to the right and to the left ...
9 years ago
Mr Reddy Maths Blog

A hasty post on problem solving in maths: more English is the answer - Email just in from a teacher: “How you are tackling problem solving? Our learners and staff are finding it a challenge and I feel the key is to ensure it i...
9 years ago
Cambridge University Press

The Gypsy’s Guide: William Wallace - *Angela Nickerson of travel blog *The Gypsy's Guide, *and author of *A Journey into Michelangelo's Rome* posted a fine interview with Michelangelo author...
16 years ago

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Tuesday, March 1, 2011

Matrices - Test yourself

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