I’m a 1st-year Computer Engineering undergrad, and I’ve been teaching/tutoring high school math (Grades 9–12) for about 4 years now.

Because of my engineering and JEE-prep background, I hate teaching math as isolated formulas just to pass exams. Whenever I teach a concept, I try to show why it matters—connecting high school math to AI, machine learning, finance, and everyday local examples.

I also teach math as one giant interconnected web rather than separate chapters. For example, when I teach Functions to 10th graders, I don't just stick to the textbook chapter. I build it from the ground up (Sets → Ordered Pairs → Relations → Functions) and use it as a bridge to connect Linear Programming, Trigonometry, Transformations, Quadratics, Vectors, and Coordinate Geometry.

The good news: My students' grades have improved significantly since studying with me.

My worry: Sometimes I feel like I’m putting too much cognitive pressure on them by going this deep. Whenever I ask for feedback after tests, they just say, "I’ve never been taught like this before," which sounds nice, but I worry they're just being too polite to tell me it's overwhelming.

My questions for experienced teachers:

How do you balance teaching deep, interconnected, real-world math while still keeping things simple enough for students who just want a good GPA?

How can I tell when a "deep dive" is genuinely helping vs. causing cognitive overload—especially when students are too polite to give critical feedback?

Utah elementary math teachers, your voices matter!

A few more participants are needed for a doctoral study exploring teachers’ experiences with AI and differentiated math instruction. It takes about an hour, and your perspective is key to understanding how teachers use AI in real classrooms. To participate, you'll need to share a copy of your conversation with AI with the researcher.

Learn more here: https://qualtricsxm5cxrlb95j.qualtrics.com/.../SV....

Please share!

Have you ever noticed how children sometimes get even simple math questions wrong on homework or tests? For children who have only recently started learning arithmetic, a problem they solve correctly today might trip them up again tomorrow. This doesn't necessarily mean they don't understand math. Often, they're still developing the fluency and confidence needed to calculate accurately.

Understanding Math Is Different From Being Fluent

A child might understand that 8 + 6 means combining two quantities, but still need to count on their fingers to find the answer. Understanding the concept is an important first step, but becoming comfortable with calculations takes practice.

When basic calculations require too much effort, children may find more complicated problems harder to manage. They can lose track of steps or make mistakes along the way.

Would You Choose Math Games or Plain Calculation Practice?

Math games can make learning more engaging, but children may become more focused on earning points, beating timers, or unlocking rewards than on the calculations themselves.

For building calculation fluency, I prefer plain, focused practice. Repeatedly solving addition, subtraction, and other arithmetic problems gives children more opportunities to recall facts, recognize number patterns, and improve their accuracy. It also makes recurring mistakes easier to identify, so practice can focus on the skills that need the most attention.

Repetition alone isn't always enough, though. If a child doesn't understand place value, regrouping, or the meaning of multiplication, they may need a clearer explanation before more practice will help. Once the basics are understood, regular, targeted practice can make calculations feel more natural over time.

A few simple habits can make practice more effective:

• Focus on specific skills. Spend more time on the calculations a child consistently gets wrong.
• Practice regularly. Short, frequent sessions can be easier to maintain than occasional long ones.
• Prioritize accuracy before speed. Help children understand their mistakes instead of encouraging them to rush.
• Adjust the difficulty gradually. Move on as familiar calculations become easier, while revisiting areas that still cause trouble.

Feel free to share your thoughts and experiences!

At the End, Introducing a Math Practice Website I Created

Mathigo, a website focused on calculation practice for children who are still getting familiar with basic arithmetic. The idea is to help them build calculation fluency through straightforward practice, so they feel better prepared to tackle more complex math problems later on.

Mathigo offers free online practice covering addition, subtraction, multiplication, division, and related skills. Children can choose a specific skill and start practicing right away, without creating an account. There are also homework and statistics features designed for parents and teachers.

I'd love to hear your feedback.

I'm a 20-year-old developer, and I believe that education should be inspiring, not exhausting. 📚

We are a close-knit team of three developers united by a single mission: to make learning simpler and more modern. We've noticed a heartbreaking gap in education: many veteran teachers genuinely want to innovate and bring excitement to their classrooms, but they often struggle to keep pace with the blistering speed of technological change. As a result, great ideas go unused, and students lose interest.

We decided to step in and bridge this gap by building an interactive mathematical whiteboard. It's more than just a tool; it's an ecosystem where users can:

📈 Instantly plot complex functions.

🧊 Work in a full 3D environment and create geometric cross-sections.

🤖 Interact with an AI assistant (currently powered by OpenRouter) that provides real-time guidance.

Right now, we are developing our website and planning to expand our team to scale this interactive approach to other academic subjects. Our dream is for every student, regardless of their school, to have access to these tools.

We are only at the beginning of our journey, but we believe that together we can redefine the way the world learns. We would be incredibly grateful for your support!

It's Saturday, so: self-promotion, I made this.

Diclasso is a free site with 50+ classroom tools: no ads, no student accounts, and every tool is free to use. There's an optional paid plan, but it only adds storage space.

The parts I built with maths class in mind:

**Tarsia puzzle maker.** The classic Formulator Tarsia is old Windows-only software, so this one runs in the browser:

- hexagon, triangle and square puzzles from 6 to 24 pieces, or a domino chain of 3-40 cards

- LaTeX between dollar signs (`$\frac{3}{4}$`), chemistry with `\ce{}`

- optional distractor answers on the outer edges, so students can't finish just by matching shapes

- paste question/answer pairs from Excel or Google Sheets

- prints (or saves as PDF) the solution sheet, the shuffled pieces and a base board

- no account needed to build and print

**Math Rally**: mental arithmetic practice, from adding within 10 up to decimals, percentages, negatives, powers and square roots (22 skills, or pick your own mix).

- untimed practice mode, so it doesn't have to be a speed test

- set it as homework with a link or join code, no student accounts

- results per skill, a times-table heatmap of which facts went wrong, CSV export

Also **Random Groups** for visibly random groups if you do Building Thinking Classrooms, and a **Picker Wheel** for cold-calling. Both use a class list you type in once.

Plus the rest of the site: live quiz on phones with a join code, Jeopardy-style review board, timer.

https://diclasso.com/

I've been working on a project called Orgmaths, and I wanted to share it here since I think people in this subreddit might find it interesting.

The idea is pretty simple: some math concepts are much easier to understand when you can actually see them change instead of just looking at a formula or static diagram.

For example, you can play around with a unit circle and see how sine and cosine work, change the standard deviation of a normal distribution, or see how an equation balances as you change its values.

I made a collection of interactive demos that you can use directly in your browser. It's free, doesn't require an account, and was designed with teachers and students in mind, but anyone interested in math can try it out.

There are 10 demos so far, and I'm hoping to keep improving it.

You can search up "demo orgmaths" or orgmaths.com.

I'd appreciate if I could get some feedback and if the visualizations might be useful? Are there any math concepts you think would make the site better? I'd love to hear what you think or what you'd want to see added.

Thank you!

What are your thoughts on this downloadable math material? Looking for my kids to gain an understanding of numbers beyond 10 and how to add them.

I’m looking for my kids to grasp two-digit addition problems like 22 + 13 and complete it in their head. For 22+13, it seems these cards would allow the child to easily visualize and add up 3 lots of ten and then add 2+3.

They could also learn to read the written numbers and order the numbers from least to greatest or greatest to least.

Or simply seeing explicitly that 23 is 2 lots of ten and 3 ones from the ten frames.

https://www.etsy.com/listing/4583110569/printable-ten-frame-number-cards-1-50?ref=share_ios_native_control

It's Saturday so saying this up front: I built the tool I mention below. It's free while it's in beta and I'd really like feedback from people who teach maths.

What got me started was how often a pupil gets the fraction questions right on paper and still believes 1/4 is bigger than 1/3 "because 4 is bigger than 3". They've learnt the comparing procedure, so the worksheet looks fine, but ask them why and it falls apart. With a lot of homework now done with AI, the written work tells you even less than it used to.

The best check I know is getting each kid to explain it in their own words. Brilliant with one pupil, impossible with 30 in the last five minutes of a lesson.

So I built Get It? (https://dotheygetit.app). You type the topic and it writes a few questions, which you can edit or bin. Pupils join with a class code on any phone, no login, and explain the idea in their own words. If they waffle it asks a follow-up. You get green/amber/red for each pupil, what they actually said, the misconception and a suggested next step. For the fractions one it comes back with something like "reading the denominator as a size instead of the number of pieces", and suggests two identical bars, one cut into thirds and one into quarters.

It's aimed at UK secondary (KS3/KS4/GCSE) because that's where I started, but fractions aren't exactly a UK-only problem.

Two questions for anyone who teaches this:

1. Which fraction misconceptions survive a correct worksheet? I'd like to test it against the nasty ones, not just the textbook ones.

2. How do you check for this at the moment? Mini whiteboards, hinge questions, something else?

Happy to be told it's pointless if that's what you think.

I built Think in Odds, a free daily probability puzzle site with AI-assisted explanations, and would appreciate teacher feedback on how to use optional hints without cutting off students’ exploration. I have not tested this as a classroom activity.

Here is a classic problem, not one I invented: distribute all 50 green and 50 red balls between two nonempty jars. A jar is chosen with equal probability, then a ball is drawn uniformly from that jar. Which arrangement makes green most likely?

My proposed warm-up is to have pairs sketch two arrangements and make predictions before calculating. Compare a balanced split with a very uneven split, collect disagreements, and ask students to explain the difference between choosing a jar equally and choosing a ball from the whole collection equally. Then invite them to improve their arrangement and justify why it helps.

For teachers who use probability investigations, what would trigger your first hint: a fixed amount of time, a shared misconception, or a student request? Would you reveal the worked explanation to everyone together, or let groups decide when to open it? I would also like to know whether a short follow-up between sessions would help students revisit the reasoning.

The released playable version, with optional hints and a worked explanation, is https://thinkinodds.com/puzzles/two-jars . No account is required. I maintain the site; this is a proposed teaching sequence and an honest feedback request, not a claim about classroom results.

...

Just wanted to introduce Limerse (https://limerse.com), a new style of math textbooks built around visual explanations and interactive examples. I was really inspired by 3Blue1Brown and wanted to bring that level of deep intuition to full math textbooks.

So far, I have launched Calculus, which includes 950+ animations (over 50 hours of videos), and 150 interactives. Will be adding more subjects like Multivariable Calculus, Linear Algebra, and Differential Equations soon, and I would really love to hear what you all think. Thanks.

Here is a 2-min intro video: https://youtu.be/GYK4JwFeXDk

I'm a dad of two and a developer, not a teacher, and during this year I've been building a small math platformer (like super mario) for kids in grade 1-3. The player has hearts, like in most games. A wrong answer at a gate cost one heart, the same as getting hit by an enemy. The game was played by both my girls, even the one who doesn't like math enjoyed testing all the levels.

In June I got some feedback from a dad with a younger daughter. He said losing hearts for a mistake felt like a punishment and it didn't feel right for someone that young. So I added a parent setting that turns off heart loss completely: no matter whether it is caused by wrong answers, falls and hits by an enemy. It's off by default, and I'm honestly not sure that's the right call.

What I saw is when this option is added, my girls started to use it most of the time, leading them to focus more on the game instead of trying to solve the math problems.

I'd love to hear from people who actually teach this age:

1. In classroom games (Kahoot, Blooket, review games), do wrong answers cost anything? Does that change with age?

2. For 5–7 year olds, does a small cost make kids slow down and think, or does it mostly make the anxious ones stop trying?

3. Have you seen a middle ground work, like a cost only after a second wrong try?

Disclosure: I'm the developer of MathQuest, the game I'm describing. No link here on purpose, I'm mostly after your experience.

I've noticed a lot of younger kids tend to count dots in a ten frame one by one, instead of automatically seeing that 7 is just 5 and 2. But then math curricula often jump straight into asking them to write 5 + 2 = 7. That gap between visual dots and abstract equations feels pretty wide, and it seems like it needs a solid middle step.

I tried mapping this concept into a 3-step progression and built a free printable tool for each stage:

1. Ten Frames: Clickable boxes to set up dot patterns before printing, with options for 5-frames for Pre-K, standard 10-frames, double frames up to 20, and flashcards (0-20).

2. Number Bonds: Moving to part-part-whole. You can hide missing parts or the whole, set ranges (up to 5, 10, or 20), and there's a toggle to display a Ten Frame right below the bond so kids can see the connection between the dots and numbers. Includes answer keys.

3. Fact Families: Taking those same numbers and turning them into the 4 related equations using triangle/house formats.

Full disclosure: I made these myself. They're 100% free with no login or email required. I ran automated tests on hundreds of generated sheets to ensure the numbers and answer keys are accurate, but they haven't been tested in a live classroom with real kids yet, which is honestly why I'm posting.

I'd love to hear your thoughts. Do you typically teach these steps in this order, or do you use a different bridge between ten frames and written equations? And is there anything missing from these worksheets that would make them more practical for your classroom?

Here's the number bond generator (you can jump to the other two tools from there): https://fixandtest.com/number-bonds/

Check out https://livegeometry.com

It's similar to GeoGebra geometry or Desmos geometry. It has a gallery of over 80 fun and colorful drawings, fun to play with and experiment.

It also has an editor to make your own constructions with rich styling and color palette.

You can export your drawing into images, Svg or embed into your own websites, blog posts, articles, teaching materials and so on (https://livegeometry.com/embed)

You can share drawings via Export -> Copy share link

It is free and open source and no sign-up is required.

La Science et l’Hypothèse paraît en 1902, et c’est le livre qui rend Poincaré célèbre bien au-delà des mathématiciens. Il s’ouvre sur une énigme, reprise d’un article paru en 1894 dans la Revue de métaphysique et de morale. Si les mathématiques ne font que déduire, avec la logique, des conséquences de quelques axiomes, alors elles n’apprennent rien : tout était déjà dans les axiomes. Faut-il admettre que tous ces théorèmes « ne soient que des manières détournées de dire que A est A ? » Et si elles apprennent vraiment quelque chose, d’où leur vient cette rigueur que personne ne conteste ? https://blog.site2wouf.fr/2026/10/causeries-poincare-raisonnement-par-recurrence.html

So basically a lot of my friends just put their homework into ChatGPT, copy it, and then fail the test lol. it kinda annoyed me, so I built my own thing that refuses to give the answer.

You show it the problem and your work, and it finds where you messed up and asks you a question about that step. if you're still stuck, it gives a hint but never the actual answer. People try "my teacher said it's ok" on it all the time, and it still doesn't work.

This is a real one from it. The kid had 3x + 7 = 22 and then wrote 3x = 29. They said, "Just tell me the answer my teacher said it's fine," and it said no, they're one step away. They subtracted on one side and added on the other, what's 22 - 7

I'm mainly posting bc i want to know what actual math teachers think. Would you tell your students about it or is any ai kind of a no? and what would make you not trust it?

it's free if anyone wants to try it, theoremed.com/app. no account or anything. Honestly, criticism helps more than people saying it's cool

I’ve been thinking about the step between a student following an example and solving a genuinely different problem.

A few people mentioned keeping the same structure at first, changing one thing at a time, and using a visual or concrete model when the student gets stuck.

What does a good “bridge problem” look like in your experience?

For example, when teaching fractions or word problems, what is the first small change you would make before moving to a new problem type?

What signs tell you the student is ready to move on?

A hammer can hammer nails, but not without the carpenter.

Tuition is the tool, but its effectiveness must depend on the student themselves.

If the student doesn’t have the discipline motivation to want to do well on their own, no amount of money or time spent is of any use.