Rocks and minerals are great on their own, but they also turn into some pretty amazing stuff! An online lesson explains the different types of materials we get from rocks and minerals, including glass, plastic, and coins. An embedded...

Cell phones are likely made of gold—at least part of them! An interesting lesson explains the conventional and not-so-conventional uses of the popular element gold. From the Inca empire to modern-day technology, learners discover gold...

Get energized by being organized! Budding business scholars construct professional letters in the seventh of nine career education and skills lessons. The resource covers proper greetings, writing requests, and explaining reasons for...

So many questions! How do people in the business world answer them? Young communicators demonstrate their understanding of correct grammar in the sixth of nine lessons focused on developing career skills. Types of questions range from...

Got milk? Only two cultures have had it long enough to develop the tolerance of lactose as an adult. Learn how the responsible genes evolved along with the cultures that have been consuming milk. This rich film is supplied with a few...

Some words are best left unspoken.  Words matter, according to Benjamin Zander, conductor, teacher, and lecturer. To illustrate his point, Zander recounts a story told to him by a survivor of Auschwitz. As a result of her experience...

Some differentiation rules are just better to memorize. The ninth lesson in a unit of 11 presents the quotient rule to pupils for them to memorize. Learners use the quotient rule to determine the derivative of two quotients after seeing...

You've got mail! Budding business associates practice constructing messages to co-workers during the second of nine career education and skills lessons. Individuals drag and drop the components of emails to enhance their online...

Time to get started, and finish up! Budding business scholars get wise to the ways of beginning and ending e-mails. The fourth lesson in a series of nine career education and skills activities examines formal versus informal ways of...

Inbox out of control? Let's clean it up! Learners explore the components of an e-mail system during the third lesson in a series of nine that focus on career education and skills. After reading a short passage, individuals identify the...

Plagued by punctuation or stymied by spelling? Lesson eight in a nine-part series of career education and skills activities introduces the importance of proofreading. Learners categorize common writing errors and construct error-free...

Manners matter! The ninth and final lesson in a series of career education and skills activities focuses on hitting a happy medium in business correspondence. Scholars master five simple rules for creating e-mails that are friendly,...

E-mail is a communication sensation! Young job seekers discover the essential knowledge required to thrive in an online world in the first of a nine-part series of career education and skills lessons. The resource covers e-mail address...

Here's a great lesson that looks at slope as an instantaneous change. Using an estimated tangent line, the presenter shows the class how to find an approximation for the instantaneous rate of change. Scholars determine the slope of the...

Britain's decision not to bomb German death camps in World War II has provided many questions for historians, but with a primary source analysis lesson, high school students may be a step closer to finding out the truth. Learners read...

Because World War II encompassed most of the globe in one way or another, many pivotal battles and events are not as visible in the history books, leaving veterans of these conflicts feeling overlooked by more famous skirmishes. High...

Sandwich the video in between lessons. Scholars learn about the Squeeze Theorem, or Sandwich Theorem, in the eighth of 18 videos in Unit 1 - Limits and Continuity. After seeing a few examples, they look at different situations to...

It is transformational! With the beginning lesson on transformations, pupils learn about vertical and horizontal translations. Scholars see how to graph important points to show the translations and then to write the transformed graph in...

Chances are high that the class will probably like the lesson. Pupils view an introduction to probability and use the information to find probabilities of simple events based on the sample space. Scholars then use their knowledge of area...

A four-part lesson features a video that details the life of a Mongolian queen. An eight-question quiz, related resources, and discussion questions follow the video to enhance the learning experience.

Capture the hearts of your young statisticians with this real-life example of using statistics in online dating. The use of average and geometric mean are discussed in the context of creating the algorithm used to connect people.

Did you know that you can find added sugars in three-quarters of the foods you find in grocery stores? Invite your learners to consider how much sugar exists in the food products we eat on a day-to-day basis, as well as to learn about...

Pupils learn how to find the derivative of a function by applying the definition using limits. Learners understand that the derivative provides the slope of the tangent line and use that information to find the equation of the tangent...

Despite what you thought, you can differentiate between continuity and differentiability. Using a short lesson, pupils learn how differentiability and continuity relate to each other. It provides three descriptions of when a function is...