小书签栏

The future of online learning

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Discover Mathigon, the Mathematical Playground. Learning mathematics has never been so interactive and fun!

腾讯文档

29·白羊·ENTJ|ABS认证性学者|ICF认证咨询师 美国AASECT受训性教育者|心理学硕士在读 一个爱聊性的姐姐✿性知识/技巧❥最专业、最敢说的中文成人性教育

Watch the Pug be in the Rug. Level up and maximize the amount of pug in your life.

历史剧网用最直观的时间轴方式展示中国历史：中国历史时间轴，历史朝代时间轴，历史事件时间轴，历史剧时间轴。

飞机杯评测,科普,安利,买飞机杯名器不能不看

🚗 A curated list of resources for learning about vehicle security and car hacking. - jaredthecoder/awesome-vehicle-security

Сайт «Военная литература», работающий с 2001 г., собрал в себе множество текстов, имеющих отношение к военной истории и истории войн, и постоянно пополняется новыми материалами. Среди них -- первоисточники, архивные материалы, документы, мемуары, исследования, проза и поэзия, биографические работы, пропагандистские материалы, статьи, альтернативная военная история, книги по истории техники и оружия, уставы и наставления, устная история, детская военная литература, карты и схемы, военная периодика и многое другое.

Explore Wonders of the World

Nothing but history's most interesting letters. Click to read Letters of Note, by Shaun Usher, a Substack publication.

Shorpy Vintage HD Photo Archive

Same rules as OpenSignups, but new private trackers are welcome. We’re excited to see OpenSignups re-open, and after a quick vote, we've decided that OpenedSignups will stay open in prevention of OpenSignups to close again and also to welcome new private trackers. (which are banned there) Add some open trackers and let the games begin! Enjoy!

Our free pregnancy calculator can estimate your pregnancy due date based on the date of your last menstrual period.

The 'Block Site' extension adds an action button to your browser's toolbar section. To restrict user access to a new site, visit the URL once and click the action button. Alternatively, you can navigate to the extension's options page, add the hostname (e.g., www.google.com or *.google.com) in the textbox, and hit the 'add' button. If you set a master password, it allows access to restricted sites for a defined duration. Furthermore, you can use this extension to redirect a hostname and its arguments to a new destination instead of blocking it. This feature is useful when you want to redirect a search engine to another search engine or a custom-blocking page. You can also ask the extension to auto-close popup windows immediately or after a period.

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GUIDE IS COMING BACK Somehow was removed from rentry

TimeGuessr - the game that tests both your geography and history knowledge. Guess the right time and location of a historical photo.

Explore our objects, archives and library with the new Royal Armouries Collection online

索引有素材、资料、网站、社群四种分类的性教育资源网站，由性教育组织 KnowSex.net 维护。

If you don't want a generation of robots, fund the arts! - Cath Crowley