How We Figured Out That Earth Goes Around the Sun

Most of the world believed that Earth was the center of the universe for a really long time. Then a few scientists decided to take a closer look.

MANUALIDADES - Sesión 2

Os mostramos la segunda sesión de este apasionante proyecto. Hemos empezado a crear nuestro decorado, para poder hacer realidad nuestro Stop Motion. Los chic...

Interactives . The Periodic Table . Groups . Ionic Bonding

Interactive exercise to practise forming ionic compounds.

Balancing Chemical Equations

How do you know if a chemical equation is balanced? What can you change to balance an equation? Play a game to test your ideas!

Proceso de fabricación de piezas cerámicas

Vídeo que muestra la fabricación de cerámica desde la obtención de la materia prima.

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GR11 English Grammar Placement Test SM

By taking this grammar-based test you can obtain an approximate rating of your English language skills.The test consists of four parts: Elementary Intermediate Upper Intermediate Advanced Find out what…

The Constitution of the United States: A Transcription

A transcription of the Constitution as it was inscribed by Jacob Shallus on parchment (the document on display in the Rotunda at the National Archives Museum.) The spelling and punctuation reflect the original.

Just English E Speaking Countries SM

Some facts and figures about the English Language

GR29 English Grammar lessons SM

Grammar Secrets