It's time for your #TapeDiagramTuesday extra challenge!
Model your solution strategy with a tape diagram.
Then share it with the community!
#iTeachMath

It's time for #TapeDiagramTuesday!Here's what to do:
1. Pick a problem.
2. Solve it using a tape diagram to model your thinking.
- - - - OR - - - -
Give the problem to your students to model.
3. Share your model with
#TapeDiagramTuesday #iTeachMath

First inside pages of the issue, showing the editorial board, information about the journal and the opening of the editorial.

The first issue of The Mathematical Gazette with me as Editor has arrived in the post!

Non-subscribers can read my editorial (and some other papers in this issue) for free at www.tandfonline.com/doi/full/10....

#MathsToday #MTBoS #ITeachMath

Four unit spheres, centered at (±1,±1,0)... and their convex hull.
Each in a single line in #Desmos 3D.
Can you do it?
#iTeachMath #math #maths #geometry
desmos.com/3d

Diffit for Teachers Teachers use Diffit to adapt content, create differentiated resources, and help all students to access grade level-content.

Saturday was National School Librarian Day! 📚 The math shows that our librarians are the ultimate investment experts. I used @DiffitApp to build this Library ROI activity tinyurl.com/3ry3werf #DiffitSpringRemix #DiffitAmbassador #FinLit #NationalSchoolLibrarianDay #iTeachMath #MTBoS #EduSky

A lot of treasures inside a mirror book, creating a unique and symmetric world.

notice and wonder => choose and make
#iTeachMath

Pedagogical Leadership, STEM, and PhET in Andean rural education *A reflection by Edward Rodríguez Mendoza, PhET Instructor 2024.

500+ rural students in Puno, Peru went from passive memorization to real experimentation, with zero internet. See how PhET Instructor Edward is transforming learning in the Andean region. medium.com/@phet-global... #PhETStories #iteachmath #math

a graph with a horizontal axis from 1957 to 1992 showing (on the y axis) the mean verbal score on the scholastic aptitude test dropping from 470 to 420

Looks dramatic, right? Remember how many questions you'd have to miss to drop your score by 50 whole points? #iTeachMath

Diagrams for 2D #geometry topics #iteachmath docs.google.com/document/d/1...

Email congratulations on being accepted to present at NCTM national math conference

Lots going on in life and today I needed some good news. #iteachmath I'll be a new voice AT NCTM. I'm grateful to be accepted and share my thoughts on how the some of the things we say to kids while teaching them math create more harm.

Such a great problem with so many slick strategies! Which do you prefer? Or your own?

#MathIsFigureOutAble #MathStratChat #MTBoS #ITeachMath #MathEd

Using Student-Created Stop-Motion Movies to Explore Math Making simple movies provides early elementary students with chances for rich mathematical discussions.

Stop-motion movies might seem like a great way to introduce math concepts, but should you really have your second-graders make the movies themselves?

Yes, yes you should. 🎥

#MathSky #ITeachMath #EduSky

I gave my calculus students a roller coaster project to practice continuity and differentiability. It was a good learning experience for both me and my students. Planning on some revisions for next year. #ITeachMath #MathsToday pbbmath.weebly.com/blog/the-rol...

man speaking with text above "I'm presenting!" and text on side: NCTM 2026 Annual Meeting & Exposition Denver, CO October 28-31"

I'm pleased to discover just now that both of our proposals for #NCTMDEN26 got accepted! Thanks to Dr. Kristopher J. Childs and the rest of the @nctm.org program committee for their hard work! Hope to see you in Denver in October. #MTBoS #ITeachMath

a 2 by 3 square grid with the top left and bottom right square missing, a green dot on each of the bottom left corner and top right corner.

d). How many ways are there to walk along the grid lines from the bottom left to the top right without visiting any intersection more than once?
#math #maths #ProblemSolving #iteachmath #mathsky

I am pleased to inform you that you are invited to attend “Old Traditions, New Editions: Meaningful Math, 1726 to 2026” in Denver in October! #iTeachMath @nctm.org

The top left main image shows a square-like geometric design created with pattern blocks. At the center are four orange squares surrounded by four green triangles and eight blue rhombuses. Each of the four corners features a ‘star’ made from four green triangles and four tan rhombuses, which are then surrounded by additional orange squares and blue rhombuses. The images along the bottom and on the right show the progression of the design.

Pattern block play! #PatternBlocks #iTeachMath

Shows the CCSS 3.G.1 geometry standard

Shows the 4.G.1 geometry standard

Shows an image from third grade in the CCSS progressions section.

Shows a sample 3rd grade test item from NWEA website in which students need to use a protractor to measure an angle.

#ITeachMath, I'm confused about grades 3 & 4 Common Core geometry expectations. By my reading, angles, (including special angles) and parallel/perpendicular lines are both 4th grade standards. Yet 3rd graders seem expected to ID special quadrilaterals by right angles & parallel sides. Any advice?

I love teaching #mathCircle! We are underway the first week at Stanford with the spring quarter and I just published a compiliation (534 pages, 288 without student exemplars!!) of our work from last quarter on the integer partition problem - such a #mathisfun and rich topic! #mtbos #iteachmath

Use 9 different factors of 84 in a 3 by 3 grid. The numbers in the top row add to 21. The numbers in the middle row add to 60. The numbers in the bottom row add to 10. The numbers in the left column add to 12. The numbers in the middle column add to 57. The numbers in the right column add to 22.

Start your week with this #yohaku. Fill in cells with 9 different factors of 84 to get totals shown in each row/column. #mathsky #iTeachMath

Math Game Monday: Sim This game challenges students to plan ahead and think strategically. Many parents remember struggling to learn math. We hope to provide a better experience for our children. And one of the best ways for children to enjoy learning is through hands-on play. So what are you waiting for? Let's play some math! Sim Math Concepts: geometry, strategy. Players: only two.

Math Game Monday: Sim

Have fun playing math with your kids!

#homeschooling #mathgame #letsplaymath #mtbos #iteachmath

7.3.2 Statistics International Childrens Book Day The Word Lists: Dr. Seuss vs. Big To perform your statistical analysis, you will need a simple random sample (SRS) of 30 words from each book. Use a random number generator to select 30 integers betwe...

Thursday was International Children’s Book Day! 📖🌟 I celebrated by using @diffitapp.bsky.social to create an activity combining literature and #StatsChat! Compare mean word lengths of two books. Check it out: tinyurl.com/3nxpjnnk #DiffitSpringRemix #DiffitAmbassador #MTBoS #iTeachMath #EduSky

Building Students’ Number Sense in Elementary Math To get an internal sense of how numbers relate to each other, students can practice working with number lines.

Want to help students build a sense of how numbers relate to each other? Use number lines! ✖️🌟

Here’s a step-by-step guide from math and literacy specialist Laura Berman.

#ElementaryTeacher #MathSky #ITeachMath

[New Post] Ontario Math Links - My Favourite #math related links from this week:

ontariomath.blogspot.com/2026/04/math...

Links and help from @howiehua.bsky.social @karencampe.bsky.social @mathsjem.bsky.social @mathsvault.bsky.social @tilefarmer.bsky.social and more #MathChat #MTBoS #iTeachMath

The top left main image shows a square-like geometric design created with pattern blocks. At the center is an orange square surrounded by four green triangles, then four orange squares, eight tan rhombuses, and eight blue rhombuses. Around this center are four flower-like arrangements. Each “flower” is made by placing four blue hexagons (made of three blue rhombuses each) and four tan rhombuses around a central orange square. The images along the bottom and on the right show the progression of the design.

Pattern block play! #PatternBlocks #iTeachMath

🌎️ Earth Day is approaching soon! Here are a few facts about our home planet:
1. Some scientists believe earth could have been purple billions of years ago.
2. Every day, 100 tons of interplanetary dust fall to Earth's surface!

#EarthDay #Iteachmath #Iteachphysics

Math = Power With. #iTeachMath

I came up with a challenging but #mathisfun problem for my level 2 students. I wonder how they will approach this! #mtbos #iteachmath

Plot of FEV for Smokers and Non-Smokers. Smokers appear to have a higher FEV which can be (erroneously) inferred as having "healthier" lungs.

We recently looked at the very user-friendly Forced Expiratory Volume (FEV) data set as an exercise in data slicing and visualization:

colab.research.google.com/drive/1u7qb6...

Got an excited message from a student: "We think we can show that smoking is good for your lungs!"

#ITeachmath #mtbos

The main image in the top left shows a radial design created with pattern blocks. It was built by arranging six identical square-like structures around a central hexagon. Each square-like structure is composed of a central orange square surrounded by four green triangles, eight tan rhombuses, and four orange squares. The rest of the images along the bottom and on the right show the progression of the design.

Pattern block play! #PatternBlocks #iTeachMath