笔战人生

Clickable map quizzes, geography quizzes, flag quizzes, world leader quizzes, historical leaders, geography education, geography learning

Travle: A daily game, get between countries in as few guesses as possible!

The best flag guessing game including all countries of the world, US states, coat of arms, emblems & more! Continent specific quizzes, Africa, Asia, Europe, North America, Oceania and South America!

Discover the flags of the world and get more information about all countries and known international organizations.

US Flags [dot] Design is a collection of visual design guides for the flags of the states and territories of the United States. Each guide describes a flag’s history and official specifications including composition, iconography, colors, and construction.

a project by ferdio

Home. Bridge Command Ship simulator, an open source 3d ship, radar and navigation simulator for the PC.

Free anatomy CT and MRI atlases for sectional anatomy

A free, open-source web app for creating and simulating 2D geometric optical scenes.

Interact with 4D shapes and learn about 4D universes!

All 2,242 of James Sowerby’s illustrations from his compendium of knowledge about mineralogy in Great Britain and beyond published between 1802 and 1817 and arranged by color.

RobotShop Community - Together, fostering a world full of robots that positively impacts our lives.

Woodworking books, magazines, plans, videos and tutorials.

story substance structure

If you want to lace shoes, tie shoes or learn about shoelaces, “Ian's Shoelace Site” is the place!

This web app makes learning morse code fun and easy with this interactive device. And of course it's totally free with no ads.

Learn CW Online - a free web app for learning Morse code!

We write guides for activists. Learn how to become a social activist, plan a political campaign strategy, and start a grassroots movement.