Article / Lessons

Why is it hard to move a heavy bookcase across a carpeted floor? And why is it easier to keep it moving than it was to get it started moving? You might think it's all about weight, but actually it's about friction. Two kinds of friction! In today's episode of Crash Course Physics, Shini Somara tells us about Static and Kinetic friction; how they work and how they're different.

ordinal numerals and cardinal numbers

One of the world's most popular games, played by millions of people worldwide in homes, parks, clubs, online, by correspondence, and in tournaments. In recent years, chess has become part of some school curricula.

In this class we will revise present and past simple and continuous, articles and jobs vocabulary and do speaking tasks

In this class we will discuss Global warming and learn what is Second Conditional

In this lesson we will discuss what is Agile life and how to use it. Also we will have grammar - tenses

Lesson goals Your student will learn to: apply the vocabulary related to talent shows; discuss a personal story about participation in a talent show; discuss details of spoken texts with advice on how to get the most of talent shows; use conjunctions of purposes, contrast and concession more confidently; bring relevant personal experiences into a conversation about talent shows.

In this lesson we will discuss customers experience and passive voice.

The history of the United States is what happened in the past in the United States, a country in North America.