In this lesson, students explore the history, relevance and current application of international tribunals for war crimes. Students look at cases from the Nuremberg trials, Tokyo trials and the Bosnian War.

In this math worksheet, 9th graders match numbers with famous house addresses. They must read the description given to help them make the correct choice in this matching worksheet. There are 13 questions with an answer key.

First graders practice nonstandard measurement and estimating and measuring lengths of objects.

In this fraction and percentages worksheet, 6th graders complete a fraction maze, word problems, table and related questions, and calculate percentages and exchange rate questions.

Charles Babbage (1791-1871) was a computer pioneer who designed the first automatic computing engine. Trace the history of the many computers he designed and how they worked. View a video [1:39] of Difference Engine No.2, in operation.