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This would be a question that would test the students understanding of Pythagoras' Theorem. When teaching this before I have often found that students are scared of thee questions because of the name, so ...

Osmosis is the movement of water from an area of high concentration to an area of low concentration across a semi-permeable membrane. 

A semi-permeable membrane acts like a barrier that allows only...

Politics can often be brought down to 2 principles; perceptions and narratives. When David Cameron conceded and decided to hold an EU referendum in order to appease UKIP's right wing voting base, he did s...

The subjunctive often expresses doubt - it is more like a mood than a tense. If something is uncertain we use the subjunctive.

A useful way to remember som...

The Presidency of the United States is one bound by constitutional checks and balances as set out by the Founding Fathers to prevent a tyrannical President. The formal constitutional constraints on the Pr...