In this secondary mathematics instructional activity, students solve a logic puzzle that takes place in a mythical land where everyone is either a truth teller or a liar.  The one page instructional activity contains one...

In this indirect Euclidean proof worksheet, learners write statements supporting the reasons for a given proof. This one-page worksheet contains ten problems.

Students research Babylonian mathematics. They calculate simple surd numbers. Students find the fractional form of rational numbers expressed as decimals. They work with numbers in base 60.

In this algebra activity, 10th graders rewrite algebraic expression using algebra. They follow specific steps to solve this word problem. There is an answer key.

There are different types of reading meant for different texts. Discuss four of these with your emerging readers. When does one perform an extensive or intensive reading? When does one skim or scan a text? How are these all different? 

Students show through art how major human events have changed American Culture. Students write in a journal to keep track of studying that is done during the unit. They also create an oral report.

A proof to show that the square root of two is an irrational number, followed by a shorter and even more beautiful proof.

This Oswego City School District Regents Exam Prep site shows you how to proof something by showing that it is false. This look at indirect proofs includes a practice and a teacher resource page, which features a warm-up activity.