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936 items — page 10 of 19

other justinmath.com

Study Sessions Should be Short and Frequent as Opposed to Long and Sparse

First, you want to form a habit. Second, you want to operate at peak productivity during your session. Third, you want to minimize the amount you forget between sessions.

Nov 1, 2023

other justinmath.com

Educational resources commonly address slant asymptotes. Why not general polynomial asymptotes?

Answer: It’s not very useful (not in practice, not in theory).

Oct 31, 2023

other stephango.com

Quality software deserves your hard‑earned cash

Quality software is like quality food from the farmer’s market. A jar of handmade organic jam is not the same as mass-produced corn syrup-laden jam from the ...

Oct 27, 2023

other justinmath.com

Can You Automate a Math Teacher?

For many (but not all) students, the answer is yes. And for many of those students, automation can unlock life-changing educational outcomes.

Oct 26, 2023

other forum.obsidian.md

The remaining advantages of tags over properties in Obsidian

As of 2023-10-15, tags still have a few remaining advantages. It has to do with quickly and simply pulling up results—and this is more pronounced with nested tags. So before the details, the advantages are: clickable s…

Oct 22, 2023

other justinmath.com

The Abstraction Ceiling: Why it’s Hard to Teach First-Principles Reasoning

As you climb the levels of math, sources of educational friction conspire against you and eventually throw you off the train. And one of the first warning signs is when you stop understanding things at the core, and instead try to memorize special cases cookbook-style.

Oct 19, 2023

other justinmath.com

When Can You Manipulate Differentials Like Fractions?

In general, you can manipulate total derivatives like fractions, but you can’t do the same with partial derivatives.

Oct 11, 2023

other justinmath.com

The Tragedy of the Commons in Education

Why it’s common for students to pass courses despite severely lacking knowledge of the content.

Oct 10, 2023

other justinmath.com

Optimized, Individualized Spaced Repetition in Hierarchical Knowledge Structures

Spaced repetition is complicated in hierarchical bodies of knowledge, like mathematics, because repetitions on advanced topics should “trickle down” to update the repetition schedules of simpler topics that are implicitly practiced (while being discounted appropriately since these repetitions are often too early to count for full credit towards the next repetition). However, I developed a model of Fractional Implicit Repetition (FIRe) that not only accounts for implicit “trickle-down” repetitions but also minimizes the number of reviews by choosing reviews whose implicit repetitions “knock out” other due reviews (like dominos), and calibrates the speed of the spaced repetition process to each individual student on each individual topic (student ability and topic difficulty are competing factors).

Oct 5, 2023

other justinmath.com

How I Won a Heat Capacitor Competition Without a Heat Capacitor

Won first place in a state-level competition by finding and exploiting a loophole in the points scoring logic.

Oct 1, 2023

other stephango.com

Buy wisely

Whenever I buy things I try to prioritize cost per use. Sometimes I consider other priorities such as cost per smile, cost per thrill, cost per externality, ...

Sep 30, 2023

other justinmath.com

How to Look Up the Meaning of an Unknown Math Symbol or Expression

Drawing –> Latex commands –> ChatGPT summary –> Google more info

Sep 28, 2023

other stephango.com

Style is consistent constraint

Having a style collapses hundreds of future decisions into one, and gives you focus.

Sep 3, 2023

other justinmath.com

For Most Students, Competition Math is a Waste of Time

If you look at the kinds of math that most quantitative professionals use on a daily basis, competition math tricks don’t show up anywhere. But what does show up everywhere is university-level math subjects.

Sep 2, 2023

other justinmath.com

According to Feynman himself, his classes were a failure for 90% of his students.

While some may view Feynman-style pedagogy as supporting inclusive learning for all students across varying levels of ability, Feynman himself acknowledged that his methods only worked for the top 10% of his students.

Sep 1, 2023

other stephango.com

Concise explanations accelerate progress

If you want to progress faster, write concise explanations. Explain ideas in simple terms, strongly and clearly, so that they can be rebutted, remixed, rewor...

Aug 20, 2023

other stephango.com

Don't delegate understanding

There is a parasite, I see it everywhere. It consumes your health and wealth. It preys on ignorance and is easy to catch. It’s so common you may not even not...

Aug 13, 2023

other stephango.com

In good hands

There is a feeling I search for: being in good hands. It is the feeling I look to give and the feeling I look to receive.

Aug 7, 2023

other stephango.com

Caloric energy is precious

Before motors there were muscles. People, horses, oxen. Anything that needed to be moved required food to be consumed, digested, converted to caloric energy.

Jul 26, 2023

other stephango.com

Nibble and your appetite will grow

The most reliable way to create motivation is to start doing the thing. Actions precede feelings, not the other way around.

Jul 20, 2023

other stephango.com

File over app

If you want to create digital artifacts that last, they must be files you can control, in formats that are easy to retrieve and read. Use tools that give you...

Jul 1, 2023

other justinmath.com

Business Lessons from Science Fair

The most important things I learned from competing in science fairs had nothing to do with physics or even academics. My main takeaways were actually related to business – in particular, sales and marketing.

Jun 19, 2023

other stephango.com

A bicycle for the senses

Until now, computers have been designed to enhance what your brain can do: think and remember. New kinds of computers will enhance what your senses can do: s...

Jun 7, 2023

other stephango.com

Black pixels

Without black pixels augmented reality is limited. Pass-through allows for black text, black backgrounds, virtual shadows, and environmental dimming.

Jun 6, 2023

other justinmath.com

How to Remember Type I, II, and III Regions in Multivariable Calculus

Type I pairs with the variable that runs vertically in the usual representation of the coordinate system. The remaining types are paired with the rest of the variables in ascending order.

May 27, 2023

other stephango.com

How I do my to-dos

Every week I create a weekly note, and write my to-dos for the week. If any items didn’t get done I roll them over to the next weekly note or drop them.

May 20, 2023

other stackoverflow.com

Supabase - Mobile - Offline first - Sync remote Postgres DB to a local SQLite DB

What is the best way to Sync remote-Postgres DB into local-SQLite DB on mobile apps ? I am currently working on a Flutter mobile project that supports offline-first. On every opening of the app (or

May 4, 2023

other justinmath.com

The Story of Math Academy’s Eurisko Sequence: the Most Advanced High School Math/CS Track in the USA

During its operation from 2020 to 2023, Eurisko was the most advanced high school math/CS track in the USA. It culminated in high school students doing masters/PhD-level coursework (reproducing academic research papers in artificial intelligence, building everything from scratch in Python).

May 1, 2023

other justinmath.com

Minimalist Strength Training, Phase 2: Gaining Mass

Minor changes to increase workout intensity and caloric surplus.

Apr 30, 2023

other justinmath.com

My Experience with Teacher Credentialing and Professional Development

Speaking as someone who had to suffer through a teacher credentialing program… it’s actually an anti-signal when someone references their teaching credential as a qualification to speak about how learning happens. It’s centered around political ideology rather than the science of learning.

Apr 29, 2023

other getgrist.com

Self-Host Your Spreadsheets

Learn all about self-hosted Grist, both the enterprise version and the open source version. Own your data without compromise.

Mar 30, 2023

other getgrist.com

Spreadsheet Software to End Data Chaos

Grist is a relational spreadsheet-database that empowers you to organize your data, your way. Get started with a free trial.

Mar 1, 2023

other justinmath.com

Why I Don’t Worship at the Altar of Neural Nets

In order to justify using a more complex model, the increase in performance has to be worth the cost of integrating and maintaining the complexity.

Jan 20, 2023

other justinmath.com

Selecting a Good Problem to Work On

Good problem = intersection between your own interests/talents, the realm of what’s feasible, and the desires of the external world.

Jan 8, 2023

other stephango.com

Great tools choose to be bad at some things

Resist criticizing tools for what they are bad at. Resist designing tools that are well-rounded. Instead, choose to be bad at something.

Nov 27, 2022

other justinmath.com

Minimalist Strength Training, Phase 1: Getting Ripped

Daily 20-30 minute bedroom workout with gymnastic rings hanging from pull-up bar – just as much challenge as weights, but inexpensive and easily portable.

Oct 31, 2022

other stephango.com

Don't specialize, hybridize

Specialization is too heavily encouraged as a career path. The world needs more hybrid people.

Oct 31, 2022

other justinmath.com

Quants vs Systems Coders

Two subtypes of coders that I watched students grow into.

Oct 27, 2022

other stephango.com

Photoshop for text

In the near future, transforming text over an entire document will become as commonplace as filtering images.

Oct 18, 2022

other justinmath.com

Tips for Developing Valuable Models

Stuff you don’t find in math textbooks.

Oct 13, 2022

other stephango.com

Calmness is a superpower

Being calm is something that you can get good at, and is worthwhile to exercise.

Oct 9, 2022

other stephango.com

Evergreen notes turn ideas into objects that you can manipulate

Evergreen notes allow you to think about complex ideas by building them up from smaller composable ideas.

Sep 18, 2022

other justinmath.com

The Counterintuitive Nature of Effective Learning Strategies

Effective learning strategies sometimes go against our human instincts about conversation.

Sep 4, 2022

other justinmath.com

Memory vs Time Graphs

A way to visualize some cognitive learning strategies.

Sep 3, 2022

other justinmath.com

The 5 Breeds of Quants

… are summarized in the following table.

Aug 31, 2022

other justinmath.com

From Procedures to Objects

An aha moment with object-oriented programming.

Aug 1, 2022

other stephango.com

A camera for ideas

A revolutionary new kind of camera was recently invented. Instead of turning light into pictures, it turns ideas into pictures. I call it synthography.

Jul 23, 2022

other sashachapin.substack.com

Notes Against Note-Taking Systems

...

Jan 31, 2022

other stephango.com

40 questions to ask yourself every decade

40 questions that delve into your personal philosophy and traits, for you to reflect on now and revisit in 10 years.

Jan 5, 2022

other bram.substack.com

The Future of Search Is Not What You Think

Or Maybe It Is, Depending on What You're Thinking

Jan 5, 2022