3 Circle Venn diagram – Definition and Examples

A 3 circle Venn diagram, named after the English logician Robert Venn, is a...

If y = y(x) and it follows the relation xcos(y) + ycos(x) = π

IIT JEE Advanced 2005 Screening Maths Question MCQ (Single Correct Answer) Marks: +2, -0.5 Question: If y = y(x) and it follows the relation xcos(y) + ycos(x) =...

Back-to-school materials for your PhD in Math. – Math with Bad Drawings

Dear Parents, Happy end of summer! I hope your child is looking forward to another...

Infinite-time computable analogues of the universal algorithm, Generalized Computability Theory Workshop, Spain, August 2024

This will be a talk at the Generalized Computability Theory workshop in Castro Urdiales, Spain, a beautiful...

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the dream of reduction to logic – Intellectual Mathematics

Podcast: DownloadEuclid’s Elements, read backwards, reduces complex truths to simpler ones, such as the Pythagorean Theorem to the parallelogram area theorem, and that in...

Mathematics — a Beautiful Mystery

     Guided by Facebook, I have found and explored a variety of Math Poems on YouTube.  Here is a sample stanza from a...

Applying the Finite Difference Method to Boundary-Value Problems 4 |

In many problems, boundary conditions are specified in terms of the derivative of the function rather than the function itself. For example, consider the...

When 1+1 Equals 1 |

dedicated to Norman Skliar and Sidney Cahn In an earlier blog-essay, When 1+1 Equals 0, I explained how 1 + 1 = 0 makes sense...

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Applying the Finite Difference Method to Boundary-Value Problems 4 |

In many problems, boundary conditions are specified in terms of the derivative of the function rather than the function itself. For example, consider the...

Tampon Tax update | mathbabe

Tampon Tax update Do you guys remember when I was a plaintiff in a New York State lawsuit against the tampon tax? My blog was...

{FREE} Multiply Decimals Mystery Maze: DIGITAL Activity

Need a quick, paperless option that will engage your students as they practice multiplying decimals? Try this self-checking, digital...

What is Bleaching Powder Chemical Name in Hindi

In this post we will discuss about, bleaching powder chemical name, how it makes in lab (chemical reaction), color, smell, test and uses of...

Reintroducing the IMplementation Reflection Tool

By Claire Neely, Senior Implementation Specialist Illustrative Mathematics’ redesigned IMplementation Reflection Tool (IRT) is a powerful, non-evaluative resource intended to shape the way your school...

Incompleteness. – Math with Bad Drawings

The stage is strewn with wreckage. Some great battle seems to have been fought here, and lost. Heartbroken, hair and clothes a mess, BERTRAND...

Building a Strong Foundation in Computer Science: A Path to Future Professional Success

Last Updated on August 4, 2023 by user The world is becoming increasingly reliant on technology, and computer science has become an integral part of...

A tale of two calculus books – Math with Bad Drawings

To honor the fifth anniversary of Change is the Only Constant, here’s a conversation “from the vault” (i.e., the year 2019) between myself and...

Subtraction of 3-Digit Numbers with Regrouping

Subtraction of 3-digit numbers with regrouping  are explained here with examples.As you borrow from the tens column, you can borrow from the hundreds column also.REMEMBER:1...

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Digital SAT Math Problems and Solutions (Part

Problem 1 : In the given figure, AC = CD. The measure...

Ceva, cevians, and Routh’s theorem

I keep running into Edward John Routh (1831–1907). He is best...

Why does FM sound better than AM?

The original form of radio broadcast was amplitude modulation (AM). With...

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Super Secret Number Puzzles for Math Class

Who doesn't love a good mystery?  But, in math class - let's face it, our students need to practice!So, I have developed an entire...

FREEBIE Algebra Riddle Solving Quadratic Equations by Factoring

Coming to you quickly today to let you know I have a freebie available if you sign up for my email list!I designed this...

How the continuum hypothesis could have been a fundamental axiom

Joel David Hamkins, “How the continuum hypothesis could have been a fundamental axiom,” Journal for the Philosophy of Mathematics (2024), arxiv:2407.02463. Abstract. I describe a...

Sub Plans for High School Math Class – Webquests are Perfect!

Distance learning ... hybrid learning ... asynchronous learning ...   we're all learning different terms right now!  Here is a type of activity would be...

Teaching AP PreCalculus This Year?

 I'll be teaching AP PreCalc next year and I'm not going to lie...I'm nervous about it.  I can't figure out why exactly...I'm an experienced...

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Teaching the Angle Sum Theorem in Triangles

Missing angles in a triangle leads us to the angle sum theorem which states that there are 180˚ in every triangle.  Really???  In EVERY...

Comparing Numbers in 3rd Grade

In 3rd grade, students transition from plotting, ordering, and comparing 3-digits numbers to performing the same skills with 4-digit numbers. This prepares them for...

Failing definite descriptions, Notre Dame Food for Thought Seminar, March 2024

I gave a talk for the Food for Thought seminar for the Notre Dame philosophy department. The topic concerned definite descriptions, particularly the semantics...

Functions from Tables – Henri’s Math Education Blog

At some point, maybe thirty years ago, it became fashionable to emphasize functions and their multiple representations in secondary school math. This was in...

Google Forms for Formative Assessment in Math Class

Cheers to a new school year that will be unlike any school year before!I know that all of us are looking at new and...

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Societal role of geometry in early civilisations – Intellectual Mathematics

Podcast: DownloadIn ancient Mesopotamia and Egypt, mathematics meant law and order. Specialised mathematical technocrats were deployed to settle conflicts regarding taxes, trade contracts, and inheritance. Mathematics enabled states to...

A Boundary-Value Problem Transformed |

Show that the boundary-value problem can be converted to a problem with zero boundary conditions: Define a new function in terms of as follows: where and are constants...

Plus and Times Set Free |

This essay chronicles the liberation of plus and times from narrow notions about what sorts of things can be added and multiplied — and, relatedly, what sorts of things...

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