jayro

Joined 18 years ago

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Member since
Jan 21
URL: http://www.codusoperandi.com Podcast: http://www.techzinglive.com

http://hnofficehours.com/profile/jayro/

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Recent submissions

Comment · 2 years ago
Hi Julius, it's been a while!

Yep, it's an extremely challenging problem.

The initial version of the Math Academy system has been primarily geared toward individual learners, which for a variety of technical and business reasons was the only realistic way to get off the ground.

However, we're implementing a variety of features that will give teachers the ability to direct their class's learning progression while still allowing the system to adapt to and meet each student's individual needs. In some cases, it will provide critical remediation while for others it will offer topic extensions and challenge problems. Additionally, the system will offer a variety of differentiated group and class projects that are unlocked as students demonstrate mastery of the requisite skills.

Comment · 3 years ago
That's a good point! We definitely need to add some more information to the website. In the meantime, if you send an email to [email protected], I'd be happy to give you demo over Zoom and answer any questions you might have.
Comment · 3 years ago
Comment · 3 years ago
We just released a comprehensive online course on Multivariable Calculus (https://mathacademy.com/courses/multivariable-calculus), and we also have a course on Mathematics for Machine Learning (https://mathacademy.com/courses/mathematics-for-machine-lear...) that covers just the matrix calculus you need in addition to just the linear algebra and statistics you need, etc. I'm a founder and would be happy to answer any questions you might have.
Comment · 3 years ago
Comment · 3 years ago
Geez, I'm trying to figure out how to describe in a short paragraph or two what it would take a book to explain. Here's my best shot.

We've created an extensive knowledge graph representing all of mathematics (3,000 topics and counting) from 4th Grade Math up through our university-level material, and our algorithms traverse the graph to identify the optimal learning tasks to assign to the the student at any point based on their performance on previously completed learning tasks: diagnostics, lessons, reviews, quizzes, etc.

There are actually multiple graphs, including one that defines the direct prerequisite relationships between topics as well as one that describes encompassing relationships (e.g. the topic on Solving Two-step Linear Equations fully encompasses the topic on Solving One-step Linear Equations Using Multiplication), but there are other graphs as well.

In addition, the algorithms have to deal with spaced repetition, which is vastly more complicated to sort out within the context of a hierarchical knowledge structure with both full and partial encompassings. (Without encompassing relationships, the backlog of reviews would quickly slow progress to a crawl).

We actually have some deep-dive writeup in the works that attempt to explain how all of this works at a level that will be accessible to most people, but it's more than I can describe here, unfortunately.

Anyway, I hope this helps a little.

Comment · 3 years ago
We should have those courses ready within the next year. Multivariable Calculus should be available in another few weeks, then Probability & Statistics at the end of July, then Methods of Proof, followed by Discrete Math, and Abstract Algebra later this fall. But courses in Number Theory, Graph Theory, Combinatorics, Real Analysis, etc. are all planned.
Comment · 3 years ago
I guess you have to think about it like this.

How much would it be worth to you to learn 3-5 years of math in a single year without getting stuck? And I mean really learning it to the point where you're able to solve the more difficult problems and are not merely able to recognize some of the symbols and terminology and talk like you know it. If you're just kind of curious about some advanced math topics you see pop up on HN from time to time and aren't really willing to invest any real time, effort or money into learning the material, which is totally fine and is probably where most people reading this comment are, then sure, spending more than $40 on a book or watching some free online videos will seem expensive.

But the reality is that very few people will be able to learn a significant amount of math by simply working through some problems in a book. Eventually they'll get stuck or just run out of gas, and when I say eventually I mean probably in 2-3 weeks. But if you're that one student who successfully taught themselves multiple courses worth of mathematics on their own from a few books and outside of any educational institution, then hats off to you! You're like that guy who put on 30 pounds of muscle doing pushups and pull-ups at the local park. You know, ... that ONE guy. ;)

But if you want a sure fire way of mastering a large amount of mathematics as efficiently and painlessly as possible, then you want a system like Math Academy that will adapt to your individual learning curve and knowledge frontier and push you through the material using the most effective pedagogy available - careful scaffolding, active problem-based learning, spaced repetition, gamification, etc.

The bottom line is this. Our system is more effective than any course available and is much cheaper for what you get. In fact, we just had a group of students ages 11-13) start with basic pre-algebra in the fall of 2021 (as in Solve x - 4 = 10) and from what I've heard all did extremely well on the AP Calculus BC exam a couple weeks ago. That's like 6-7 academic years of math in 18 months and we're expecting mostly if not all of them to earn a 5 (the top score).

But take my word it. Try it out for yourself. You automatically get a full refund if you cancel in the first 30 days, so there's no risk. And we're always available to answer your questions and support your progress.

Comment · 3 years ago
At Math Academy (https://mathacademy.com), we created a series of courses, Mathematical Foundations I, II, & III, that will take a student from basic arithmetic through calculus and prepare them for university-level courses like Linear Algebra, Multivariable Calculus, Probability & Statistics, etc. You can jump in at any with an adaptive diagnostic that will custom fit the course to you based on your individual strengths and weaknesses.

https://mathacademy.com/courses/mathematical-foundations-i https://mathacademy.com/courses/mathematical-foundations-ii https://mathacademy.com/courses/mathematical-foundations-iii

We also have courses on Linear Algebra and Mathematics for Machine Learning:

https://mathacademy.com/courses/linear-algebra https://mathacademy.com/courses/mathematics-for-machine-lear...

It's not free, but our adaptive, AI-driven algorithms makes it the most efficient way to learn math that you're going to find. We've had numerous students master 3-5 years of math in a single year.

We're still in beta and haven't done a proper Show HN yet, but we're getting there!

I'm the founder, so I'd be happy to answer any questions.

Comment · 3 years ago
There's a 30-day free trial, so if you cancel during that period you get a complete refund.
Comment · 3 years ago
At Math Academy (https://mathacademy.com), we implement spaced repetition in combination with a knowledge graph consisting of several thousand math topics and tens of thousands of connections (and growing). We're working on a post that explains how this all works technically.

We have a Linear Algebra course (https://mathacademy.com/courses/linear-algebra) that some of you might find interesting given how often that topic shows up on HN, and we just finished our Math for Machine Learning course (https://mathacademy.com/courses/mathematics-for-machine-lear...) for anyone who might be interested in giving that a look.

I'm the founder if anyone has any questions.

Sorry about the shameless plug.;)

Comment · 4 years ago
I understand why it might seem that way, but it's really not. We've just put a premium on learning efficiency, and most math classes are highly inefficient - whether K-12 or university.

Just imagine how much more quickly a student could progress through a course if they were to work one-on-one with an expert tutor 5 days per week. Quite a bit more quickly in most cases. Well, our system effectively serves as an expert AI tutor and based on our calculations is on the order of 4 times more efficient than a traditional math class.

But I get the skepticism. I'd probably be skeptical myself.

Comment · 4 years ago
It's funny you bring that up as it seems to be a common request from adults interested in leveling up their math. I'm sure we could come up with something reasonable.
Comment · 4 years ago
It's true that the students in the school program are high-aptitude, but something like 70% of the students in the middle school where this all started are on the federal free and reduced lunch program (low SES) along with a couple of the top kids in the original cohort, who I taught personally and they were amazing.
Comment · 4 years ago
We started with the multiple-choice format as it's a good 90-10 solution in terms of technology, but we now have free=response questions that are automatically evaluated and can handle fairly complex mathematical expressions - man, was that a lot of work!

But we've found the concern over the multiple-choice format to be overblown. People like to believe they can outguess a multiple-choice question by being clever, but that's not reality on our system or elsewhere such as the AP exams, the AMC exams, or the GRE Mathematics Subject Exam.

Later this fall we're going to be introducing a UI for constructing proofs that's looking really cool and should take things up a notch for the more abstract subjects like Abstract Algebra and Real Analysis. Teaching university-level proof techniques is extremely challenging and time-consuming process (most never really get it) even for undergraduate math majors at university, but I think our new tech will make it much less painful and with a much higher success rate.

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