High schoolers examine the guidelines put out by the FBI to follow during federal investigations. In groups, they discuss the decision by the FBI to increase surveillance after the terrorist attacks on September 11. They share their...

Learners solve the mystery of the kidnapped teacher by analyzing a ransom note using paper chromatography. They carefully prepare ink samples from the note to known ink samples to determine the kidnapper.

Students are introduced to the concept of variables and their uses. In groups, they are given a code in which they must find the value of the missing words. To end the lesson plan, they find the value of words over ten letters long and...