ActiveHistory is updated so frequently with worksheets, interactive simulations and other resources that it's sometimes difficult to keep track!
Here are ten of the most popular FREE resources on the site (the ActiveHistory Gallery provides lots more ideas and resources).
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Online Strategy Game: Why did the Union with the American Civil War? This simulation will help you understand the events and outcome of the American Civil War. You can play for the Union, the Confederacy, or against an opponent. A detailed worksheet is provided.
Virtual Interview with Winston Churchill - hero or villain? The unit is designed to be used with Year 9 students (13-14 years) but is easily adaptable to other contexts. It develops sourcework and essay-writing skills, and the outcome is a detailed, structured essay answering the key question "Was Winston Churchill a hero, or a villain?".
Dozens of History Display Materials You may find the following resources useful for brightening up your classroom. I recommend that you print them off onto A3 and get them laminated!
History Podcasts: mega-database This @activehistory project links to thousands of podcasts. It's part of the ActiveHistory 20th Century Research Project.
Interactive Simulation: The Origins of World War One A great way of starting the unit: complete with a range of differentiated worksheets, this decision-making adventure really gets students thinking about the important people, themes and events.
New History: Headlines, Anniversaries, TV All the latest history news, blog entries, TV and radio programmes - updated daily. RSS feed / Email digest options also available.
Harvard Citation Generator Other citation generators need YOU to do most of the hard work - and only look for books. This one searches for books, websites and films. All it needs is a web address or a title / author of a book / film.
History Teachers and Historians on Twitter  A fantastic way of building up your professional learning network - thousands of history educators and professional historians for you to follow.
Recommended History Books and DVDs A searchable database of books and DVDs, organised by topic and period - plenty of ideas for inspiration!
Planning a World War One Battlefields Trip These materials help teachers plan a trip to the World War One battlefields of the Somme and Ypres. There are two versions of the trip available. Each one comes with a detailed student workpack (plus teacher notes) which opens in Adobe Acrobat Reader. There is also a detailed itinerary for each trip which can be opened in Google Earth.
Plagiarism Checker Simply copy an essay into the box and click 'submit' to get an instant plagiarism report.