
数学小课堂 - AI 帮你理解数学题
Input a math problem to get AI-generated visual explanations for learning.
@laodaozzz · X
我也做了一个教小朋友学数学的工具叫easymath。
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Input a math problem to get AI-generated visual explanations for learning.
@laodaozzz · X
我也做了一个教小朋友学数学的工具叫easymath。

Guess the secret four-digit number in this classic logic puzzle game.
@Olys1703 · X
🚀 Just released a new version of Bulls and Cows! The game now supports Dark Mode 🌙

Free calculators for DIY home projects like woodworking, decks, concrete, and drywall.
u/CaboWabo55 · Reddit
Built a DIY calculator site in a weekend — betting on "boring tools" over content After my last project (an AI debate platform) got rejected by AdSense for "low value content," I went the opposite direction: no content treadmill, no AI features, no backend. Just genuinely useful calculators. studandslab.com — 10 free calculators for woodworking and home projects (board feet, stair stringers, concrete, drywall). Everything runs client-side, so hosting is free and every visitor costs me $0.

Free browser game Bulls and Cows — a classic number-guessing logic puzzle. Guess the secret four-digit number in as few attempts as possible.
@Olys1703 · X
Finally, Bulls and Cows has moved to its very own domain 🚀🚀🚀

Collaborate with AI agents to solve math and science problems, with a public ledger of contributions.
KrishnaMadala · HN
ZeroThesis – Multiplayer Autoresearch with Agents

Interactive lessons in math, programming, data analysis, AI, and science.
@BruceWayne95290 · X
just leaving a comment cause its 1am and im vibe coding, will come back tomorrow (on an alt account for open claw fyi) I've worked with the following brands: vytadose, bajabeachco, jaje health, eric javits, 4knines, welleco, coatdefence

Calculate concrete volume needed for slabs, footings, and driveways in yards, bags, or meters.
taylormichellebf · V2EX
做了一个免费的 Concrete Calculator,帮 DIY 用户估算混凝土用量 最近做了一个英文站:The Concrete Calculator 地址: https://the-concrete-calculator.com 它主要解决一个很具体的问题:用户在做 patio 、shed base 、walkway 、slab 这类小型混凝土项目时,不知道该 买多少混凝土、多少袋,或者该订多少 cubic yards 。 目前支持: - Concrete Slab Calculator - Concrete Pad Calculator - Concrete Yard Calculator - Concrete Bag Calculator - waste factor - cubic yards / cubic feet / cubic meters - 简单材料成本估算 做这个站的原因是我发现很多英文混凝土计算器要么广告太重,要么结果不够直观。这个版本尽量把核心计算和 单

A grid-based number puzzle game where you combine tiles to make 12.
sarreph · HN
Dozenal – A Game of Spatial Arithmetic

Interactive solver and visual guide for projectile motion problems.
@Quaxguy · X

Solve the Zebra Puzzle by placing clues to deduce who owns the fish across five houses.
@andrii_devix · X
Hello everyone, I made an interactive version of Zebra Puzzle. I've wanted to do it for a long time and finally, thanks to Claude Code) I would be grateful for feedback (better on a desktop) I'm still working on a mobile version to make it convenient)

Select a crop to calculate its value, mutations, and trading profit.
growagarden-calculator — 页面精美、功能强大的 《Grow a Garden》 游戏交易 / 攻略工具,在疯狂圈粉 1600 万 + 玩家的 Roblox 神作《Grow a Garden》中,想靠“三秒算账”闯荡菜市?这就是 Grow a Garden Calculator 存在的意义:帮你秒算作物价值、预测突变收益,还附送一整套天气 / 交易 / 攻略工具,专治“不会算

Learn math and physics through cinematic missions and interactive physics simulations.
@electricdrago10 · X