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 red trapezoids and four tan rhombuses, then eight orange squares and eight green triangles. Around this center are four flower-like arrangements. Each “flower” is made by placing four yellow hexagons 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

I can't wait for the new space. It will be very mathy and exciting! #mtbos #iteachmath

a 2 by 2 square grid with green points on the bottom left and top right corners

b). 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

Distributive Property with the #PowerPuffGirls 🍦- #MathPlay 🧮

#ITeachMath #MTBoS #EduSky #MathSky #MathsToday

3 bumper stickers on a white Volvo with numbers 13.1, 48.6, and 26.2.

Math-y bumper stickers (spotted at a stoplight).
What do you notice? What do you wonder?
#iTeachMath #NoticeWonder

#TryThisThursday
Try this Problem String to get your students reasoning about fraction multiplication.
Post of shot of your board after doing it with your students!
#MathIsFigureOutAble #MTBoS #ITeachMath #MathEd

Thinking Thursday: Perimeter Puzzle 1 Writing to Learn Math: At its heart, geometry is all about seeing connections and relationships. Do you want your children to develop the ability to reason creatively and figure out things on their own? Help kids practice slowing down and taking the time to fully comprehend a math topic or problem-solving situation with these classic tools of learning: Notice. Wonder. Create.

Thinking Thursday: Perimeter Puzzle 1

Try this week's math journaling prompt with your kids!

#homeschooling #mathjournal #letsplaymath #mtbos #iteachmath

April Calendar Problems March has marched on, and April is here! Spring is a lovely time to do some problem solving, and I have the Calendar of Problems from 30 years ago for your math enjoyment. I have a few more old Mat…

The April #ProblemSolving Calendar is posted & that's no fooling!!
Plus March solutions as well.
Share your working out & thoughts here or on the post.
#iTeachMath #MTBoS #MathsToday
#RecreationalMath #MathSky

karendcampe.wordpress.com/2026/04/01/a...

What does explicit instruction look like for problem solving? Dani Jackson joins us on Thursday, April 2 at 7 PM EST www.facebook.com/math4allshow or tinyurl.com/5hdrd5zd @mollyvokey.bsky.social @heidisabnani.bsky.social #iteachmath #iteachmaths #math4all

Use 9 different integers in a 3 by 3 grid. The numbers in the top row multiply to -312. The numbers in the middle row multiply to 63. The numbers in the bottom row multiply to -44. The numbers in the left column multiply to 396. The numbers in the middle column multiply to 91. The numbers in the right column multiply to 24. The sum of the integers in the 2 by 2 square at the top left of the grid is -5.

Try this shady #yohaku. Fill in cells with 9 different integers to get products shown in each row/column AND sum of 4 shaded cells is -5. #mathsky #iTeachMath

In #mathstoday we are looking at calculating volumes by cross-section #iteachmath #calculus

25 x 32 use money! (Quarters)
4 quarters in 1 dollar
25 x 4 x 8
100 x 8
800
#MathStratChat #iTeachMath

It's time for #MathStratChat!

Rules: post your favorite or a clever solution! It's also fun to comment on other's strategies.

Tell us about your reasoning.
Like/share so others can see!

#MathIsFigureOutAble #MathStratChat #MTBoS #ITeachMath #MathEd

Pyplot figure of atmospheric CO2 data oscillating while increasing from 1958 to present. A model is well-fit to the data.

Another student sent an update on modeling the atmospheric CO_2 data, and was able to get the model:

a sin(b(x +c)) + d + ex +f x^2

to fit quite nicely.

#ITeachmath #mtbos

We actually do math in our math PD, and the same is true for most of our podcast episodes. That shouldn't be weird.

#MathIsFigureOutAble #MTBoS #ITeachMath #MathEd

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

New pattern block play for April! Using squares and rhombuses from classic pattern blocks to create designs. #PatternBlocks #iTeachMath

New workshop just dropped:
Developing Mathematical Reasoning in Companion Animals. 🐾

Because reasoning > memorizing… even for pets.

Happy April Fool’s Day! 😄

#MathIsFigureOutAble #MathStratChat #MTBoS #ITeachMath #MathEd

Join us with Dani Jackson to hear about explicit instruction for problem solving on Thursday, April 2 at 7 PM EST www.facebook.com/math4allshow or tinyurl.com/5hdrd5zd @mollyvokey.bsky.social @heidisabnani.bsky.social #iteachmath #iteachmaths #math4all

Use 9 different factors of 510 in a 3 by 3 grid. The numbers in the top row add to 42. The numbers in the middle row add to 16. The numbers in the bottom row add to 188. The numbers in the left column add to 186. The numbers in the middle column add to 50. The numbers in the right column add to 10.

Start your day with this #yohaku. Fill in cells with 9 different factors of 510 to get totals shown in each row/column. #mathsky #iTeachMath

Statistics Lab Dominant vs Non-Dominant Pool Noodle Toss Experimental Design & Randomization Part A: Defining the Scope Before beginning the toss, clearly define the group you are studying and the specific individuals participating in this lab. Population: ...

Celebrate National Play Outside Day tomorrow by getting your students outside to do real Statistics! 🌤️🏃‍♀️🌿Check out this Pool Noodle Toss Lab that I created with @diffitapp.bsky.social tinyurl.com/2frtvcrb #DiffitSpringRemix #DiffitAmbassador #StatsChat #MTBoS #iTeachMath #EduSky

My book is almost here!
Use the code 26SMA2 at routledge's website and get 20% off its price!
Starting today until 30 September 2026.
Don't miss it!
@routledgebooks.bsky.social
#math #geometry #puzzle #book #MasteringGeometryPuzzles
#BookSky #iTeachMath #EduSky

Puzzle #2
The number 403 is created out of fifteen matchsticks.
Modify the position of two matchsticks to get a number divisible by 9.
This puzzle was published on @nytimes.com and on @theguardian.com.
Check the solution in the comments.
#math #matchstick #puzzle #iTeachMath #EduSky

Inquiries-Week 7: EOOEOEEO 0 8 4 2 1 ← ▶ →

New inquiry post with odious numbers: www.fractalkitty.com/inquiries-we...
#mtbos #iteachmath

Opinion | This $2 test leads to nearly 30,000 arrests a year for no reason Innocent Americans are being sent to jail on drug charges because of false positives.

Law enforcement and corrections agencies have observed false-positive percentages of 15, 38 and even 91. #iTeachMath

wapo.st/4sJIoK4

#TryThisTuesday
The coolest, most effective instructional routine out there - Problem Strings!
What does this series make you think about?
Post a pic of your board!
#MathIsFigureOutAble #MathStratChat #MTBoS #ITeachMath #MathEd

Image of a hand-written 0, composed of pixel values, next to an image of a 1 also composed of pixel values.

In #MathsToday we started our feature-engineering project with 0s and 1s from MNIST

Given a spreadsheet or DataFrame where each row contains 784 pixel values representing an image of a hand-written digit, how can we distinguish a 0 from a 1?

#ITeachMath #mtbos

If your students liked math until the alphabet got involved, there's a good chance they're stuck in additive thinking.

#MathIsFigureOutAble #MTBoS #ITeachMath #MathEd

Adding each term in the Maclaurin series for e^x, one term at a time! #EduSky #ITeachMath

Made in #Desmos

www.desmos.com/calculator/u...

This problem is inspired by the 1977 Canadian Math Olympiad, Q7.
a). 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

This image shows pattern block designs arranged in a 4 by 4 grid, with the center four squares merged to highlight a larger design. It features 13 unique pattern block creations from March. The images show six double hexagons arranged around a central hexagon with six regular hexagons added to fill in the gaps between the double hexagons, completing the radial pattern.

Looking back at some of the shapes and designs from my pattern block play in March! #21CenturyPB #iTeachMath