Taxonomy is a powerful tool, and one that modern biology wouldn't be able to function without. But trying to shoehorn the messy, complicated web of interrelationships that is biology into neat boxes has resulted in a pretty messy tree of...

👉 Learn how to reflect points and a figure over a line of symmetry. Sometimes the line of symmetry will be a random line or it can be represented by the x or y-axis. Either way when reflecting a point and or figure over the line of...

👉 Learn how to graph linear equations written in slope intercept form. When given a linear equation in slope intercept form, (i.e. in the form y = mx + c, where m is the slope and c is the y-intercept). We first plot the y-intercept and...

👉 Learn how to solve quadratic equations using the quadratic formula. A quadratic equation is an equation whose highest power on its variable(s) is 2. The quadratic formula is a formula which can be used to find the roots of (solve) a...

Interphase and Regulation of Cell Cycle by CDKs and Cyclin

The video is a lecture on the topic of macroeconomic equilibrium and its relation to the circular flow of income. The lecture breaks down the concept of macroeconomic equilibrium and its importance in understanding the economy as a...

When you listen to the same line of speech over and over again, it can start to sound like a song. This is know as the Speech-to-Song Illusion. Learn who came up with the name for this phenomenon and why it happens.

One of the largest migrations in modern history, Partition was characterized by its brutal violence that continues to scar the Asian subcontinent to this day. This episodes documents the personal stories of people separated by Partition...

Part 1 of Tryptophan Degradation by the Liver

In this lesson, Mr. P. will discuss how to write a conclusion paragraph of an opinion essay. He will focus on how to rewrite your thesis statement, review topic sentences and conclude the paragraph with a suggestion, an opinion or a...

How much progress has been made in gender diversity in the tech field in the past few years? CIO writer Sharon Florentine, who frequently blogs about women in IT, talks with hosts Juliet Beauchamp and Ken Mingis about companies that are...

What were the major religions that moved along the silk roads? What items moved from west to east?<br/>
The Silk Roads: Ideas and Religion, Part 1

This video is a lecture presentation on the liquidity preference theory. The lecture explains the three monetary motives behind holding money: the transactions motive, the precautionary motive, and the speculative motive. The video also...

In this lesson, Mr. P. will discuss how to write an opinion essay using transition words to create a better flow among paragraphs and sentences. He will focus on four groups of transition words and then changed an essay. This lesson is...

In this Linux tip, learn how to use the diff command. It’s one of a number of commands that can report on file differences. If the files are text files, the command will display the differences line by line. If they’re some other kind of...

A hook or attention grabber is the first sentence in an academic essay. At the beginning of the lesson, Mr. P. will list the different parts of an essay. Then, Mr. P. will introduce four tips on how to write a good hook in order to grab...

This series of videos explores the concepts of volume, mass, and density. The means by which volume and density are calculated is highlighted. Everyday examples of each make the concepts easy to understand.

In this video, the teacher explains how to write a closing paragraph that stays on topic for a prompt. The teacher emphasizes the importance of referring back to the prompt and the main ideas of the response. They provide step-by-step...

👉 Learn how to graph linear equations from the table of points. When given the table of points of a linear equation, we plot the x and y coordinates of the given table on the cartesian plane and join the ploted points to form a straight...

Seemingly distant ecosystems, even half a world apart, are connected in surprising ways. In this special limited series, Emily Graslie and Trace Dominguez join me as we explore the universal rules of life that tie together Earth’s living...

In this video, the teacher explains the seven elements of effective communication, including active listening, clarity and conciseness, personalization, empathy, confidence, open-mindedness, and giving and receiving feedback. The lesson...

In this lesson, you can learn how to write an IELTS task 2 essay.

Task two in the IELTS writing exam is the biggest challenge in IELTS for many students. You have 40 minutes to write an essay, which could be on almost...

This video will give you a sentence by sentence look at the introductory paragraph. In it you'll learn how to create an interesting title| an attention grabbing hook| a properly introduced subject| and a specific thesis statement. We'll...

👉Learn how to solve a system (of equations) by elimination. A system of equations is a set of equations which are collectively satisfied by one solution of the variables. The elimination method of solving a system of equations involves...