Duke University has established the Center for Inquiry-Based Learning. It serves to enhance math and science lessons. Click on Resources for good examples of Inquiry-based lesson plans.

In this proofreading exercise, students read a sentence and decide if it is correct. If it is correct, they leave "Correct" in the box; if not, they use the drop-down menu and select the type of error they detected. Then they click check...

After reading a short passage, you can check your comprehension through some multiple choice and short answer questions. Immediate feedback is provided.

Practice basic mouse manipulation skills using this interactive lesson. Using the mouse, learners move the shapes to create a colorful and funny face. Immediate feedback given.

Practice basic mouse manipulation techniques using this interactive lesson. Using the mouse, learners move the shapes to create a colorful snowman. Immediate feedback given.

An online quiz about probability. Quiz includes a timer, help links, level, and feedback. Teachers can register for free at the site to save students' assignments.

Learn how to calculate a fair price for a service. You'll be exploring calculations of direct cost, overhead, profit and more. The answers you give to the lesson questions will receive immediate feedback.

Decide if objects are above, below, beside, in front of, or behind other objects. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice solving more word problems by finding how many more (or fewer) objects there are. Numbers used are 20 or less. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive...

Practice solving more challenging word problems with addition and subtraction. Numbers used are 20 or less. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice adding and subtracting using the number line. Numbers used are 100 or less. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice using metric rulers and rulers with inches. Includes helpful feedback when questions are answered incorrectly.

Scholars explore the Biology concept of homeostasis. The tutorial consists of definitions, examples, and pictures. Topics include homeostasis in organisms, how they work, and the internal environment.