Digital SAT Math Problems and Solutions (Part

Problem 1 : The table above shows the distribution of test scores in Mrs. Keaton's...

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...

Non-Euclidean geometry – Intellectual Mathematics

Podcast: DownloadThe discovery of non-Euclidean geometry in the 19th century radically undermined traditional conceptions of the relation...

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constructivist principles of special relativity – Intellectual Mathematics

Podcast: Download Einstein’s theory of special relativity defines time and space operationally, that is to say, in terms of the actions performed to measure them....

Calculators | Mathematics, Learning and Technology

Calculator pages are currently being checked and updated.A series of pages is available from the top menu under Calculators. Further calculators are available; they will...

Calculators – updated | Mathematics, Learning and Technology

New from Casio – videos on the ClassWiz series, a YouTube playlist of 38 videos. https://www.youtube.com/watch?v=MovKa26hFrk https://www.youtube.com/watch?v=o-TD9i6OsEY I have now updated the series of Calculator pages, all...

The Unreasonable Effectiveness of Mathematics

      Daniel May -- professor at Black Hills State University in South Dakota -- enjoys not only teaching mathematics to future teachers...

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Multiply Decimals Classroom Scavenger Hunt {FREE}

Do your 5th or 6th grade students need to practice multiplying decimals? Get them up and moving with this...

Getting Started with IM Certified® Math

By Dr. ​Catherine Castillo, Sr. Specialist, Implementation Portfolio Are you leading IM implementation at your school or district and want to ensure an organized and...

High School Math Pixel Art – They Loved It!

I have been so busy with my own classes and elearning, I haven't been able to do anything with my blog! But, we had so...

Digital SAT Math Problems and Solutions (Part 44)

Problem 1 :A cargo helicopter delivers only 100-pound packages and 120-pound packages. For each delivery trip, the helicopter must carry at least 10 packages,...

The shape of our mathematical beliefs – Wonder in Mathematics

As part of a suite of actions to address the teacher shortage in Australia, the Federal Government recently released its latest reform agenda for...

Dividing Fractions – Steps, Shortcut, and Examples

Dividing fractions is not hard. Instead, it is very straightforward once you know how to multiply fractions. It is important to explain some important terms...

Chess Board With Numbers Explained (+ free download)

Chess board with numbers helps make the game of chess more strategic. The process of using numbers and letters to determine the position of...

Applying the Finite Difference Method to Boundary-Value Problems 2 |

Let’s examine the following two-point boundary-value problem: Notice the first-order derivative term is missing from the differential equation. This omission is made without the loss...

A Construction Unit – Henri’s Math Education Blog

I have written about geometric construction a number of times on this blog, and on my website. I outlined my philosophical outlook on this...

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...

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Pre Calculus Problems and Solutions (Part

Problem 1 :What does the Intermediate Value Theorem say about the...

Digital SAT Math Problems and Solutions (Part

Problem 1 :The equation 10z2 + 3z + c = 0...

Derivative Problems and Solutions (Part

Problem 1 : Note : a is a constant.Solution : https://www.youtube.com/watch?v=ac0bcUj34FU Problem 2 : Solution...

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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...

Compose & Decompose 4-Digit Numbers in 3rd Grade

We have a base-10 number system. That means we can use 9 digits plus place-holder zeros to represent any quantity. In standard form, numbers...

How we might have viewed the continuum hypothesis as a fundamental axiom necessary for mathematics, Oxford Phil Maths seminar, May 2025

This will be a talk for the Philosophy of Mathematics Seminar at the University of Oxford, 19 May 2025. Abstract. I shall describe a simple...

Manipulatives – Henri’s Math Education Blog

Liz Caffrey is a master middle school math teacher in the Boston area. She is the author of last year’s Lab Gear, the...

Spice Up Math Class with Logic Puzzles

High school math class doesn't have to be a dry slog of equations and formulas. In fact, it can be a thrilling adventure in...

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Carnival of Maths 232 | The Aperiodical

By Katie Steckles. Posted October 5, 2024 in Carnival of Mathematics The next issue of the Carnival of Mathematics, rounding up blog posts from the...

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...

Boost Critical Thinking Skills in Algebra Class – Use Logic Puzzles

In today's fast-paced and technology-driven world, developing critical thinking skills is more important than ever. As educators, we strive to provide engaging and effective...

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...

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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Intersections — Poetry with Mathematics: World’s Most Interesting Mathematician

     Angela Tabiri, a young mathematician from Ghana, in July captured global attention by winning the title,  World’s Most Interesting Mathematician. Here is her story!  This accolade was bestowed...

Finding a Limit Without L’hôpital Rule or Taylor Expansion

Finding a Limit Without L’hôpital Rule or Taylor Expansion Posted: May 19, 2022 in Mathematics Tags: exams, limit, math, solution Saw this limit when I was watching a Korean drama, Melancholia. The drama...

What makes a good axiom? – Intellectual Mathematics

Podcast: DownloadHow should axioms be justified? By appeal to intuition, or sensory perception? Or are axioms legitimated merely indirectly, by their logical consequences? Plato and Aristotle disagreed, and later...

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