Stories make use of recurring ideas called "tropes" which repeat across genres and through time. The community at TVTropes.org catalogues these tropes in an enormous wiki, collecting examples for ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

When Dimitri Mendeleev published the first periodic table 150 years ago, only about half as many elements were known as today. Over the ensuing decades, researchers have added new names to the chart, ...

Play this game to learn about lots of different elements in the periodic table. While you're watching, look out for where different elements are found in the periodic table. Mrs Roberts: So, here I ...

The periodic table is the very symbol of chemistry, its carefully organised list of the elements make up the very world around us. And you'd be amazed at just how many of them crop up during a ...

It has been 150 years since Mendeleev presented the Periodic Table, and how successful it proved to be ! I will talk you through how laying out the elements in a systematic fashion is used to make ...