In this series of programs students are introduced to perimeter and area. Easy-to-understand examples enable students to understand the process by which perimeter is calculated. The area of rectangles, parallelograms, and triangles is...

Parallel lines have the same slope and no points in common. However, it is not always obvious whether two equations describe parallel lines or the same line.

An introduction to trigonometry.

Many of the things we eat and enjoy are grown in soil. This engaging program explores the soil and rocks importance of soil while taking a look at how soil is formed. Different types of soil and their characteristics are explored.

The word "GAY" has a long history in the English language, but why did "GAY" stop meaning "happy" and start referring "same sex relationships?" Watch this week's episode of Origin of Everything to find out.

This video helps students to learn that a comma is a punctuation mark and shows how it is used in grammar. Through live action video, animation and graphics, students will come to understand how to use commas to write dates, addresses...

"Bossy" or "assertive", "bubbly" or "charismatic": the English language uses different words to describe men and women. The Economist's language expert Lane Greene explores the gender stereotypes used in everyday speech.

In this video, students learn how to visualize and understand part-to-total ratios using pictures. The teacher explains common mistakes students make, such as not realizing that the part is included in the total and thinking that a ratio...

In this video, the teacher explains how to write a fraction from a word problem by identifying the important information and determining what is being described. The examples given involve determining the fraction of students not wearing...

Art and poetry can help reveal truths and build self-awareness. Poetry helps us explore our inner selves and see the self we show others.



In this activity, children aged 8-11 will write poems that describe who they are and how...

In this video, students will learn how to describe elevations above and below sea level using positive and negative numbers. The lesson explains that sea level is considered zero, and elevations can be thought of as vertical number...

Today we're exploring the intriguing Ouramoeba vorax. Or wait... is it Amoebophilus simplex? Let's figure that out together by diving into some history!<br/>

In this lesson, students learn how to describe the distribution of data by finding the mean. They are taught the difference between the median, mode, and mean, and how to calculate the mean by adding up the values and dividing by the...

In this lesson, students will learn how to look at a picture of a fraction and write it in standard form. They will understand the concept of numerator and denominator, and how to represent fractions as pictures.

Learn about the difference between adjective pairs ending in -ed and -ing. Watch some examples and guess which adjective is correct. Learn specifically about the words bored/boring, surprised/surprising, interested/interesting, and...

In this video, students learn how to describe the distribution of data by analyzing the shape of a graph. They are taught about different shapes, such as bell curves, skewed graphs, clusters, peaks, and uniform distributions.

An explanation of limits and limit laws as they pertain to calculus.

This exciting program takes a glimpse at some of the amazing advances in modern genetics. Starting with the discovery of DNA, students will be exposed to advances such as the creation of recombinant DNA, vaccines, the human genome...

This video illustrates how length and temperature are measured using common lab equipment. Students are shown how to accurately measure length using tools such as meter sticks and metric rulers, and how to record their observations....

Venn diagrams are an important tool allowing relations between sets to be visualized graphically. This chapter introduces the use of Venn diagrams to visualize intersections and unions of sets, as well as subsets and supersets.

Writers explain ideas precisely by using specific words related to their topics. Let's practice clarifying our writing by replacing vague or confusing terms with domain-specific vocabulary.

Learn the basics about calculating molarity as part of the chemical calculations topic.

The meaningful use of language and vocabulary are some of the fundamentals of science. This program explores strategies and methods of understanding scientific language. Emphasis is placed on how the language of science supports...

This video explains the concepts of habitat and niche in the context of organisms' living environments. This video is part of the 9-part series, Ecology Fundamentals.