On Tuesday members of the National Union of Teachers (NUT) are walking out in what it is be the union's first national day of action since 2014.

Members voted overwhelmingly in favour of action in order to address school funding and to resume negotiations on teacher contracts.

In the NUT’s ballot, 91.7 per cent voted in favour of strike action, with a 24.5 per cent turnout.

It will be the latest in a series of strikes that the union has called to tackle issues that have remained similar for many years.

But in a letter written to Nicky Morgan, the Education Secretary, on June 28, the NUT highlighted further reasons for striking, stating that the note was a "last appeal" before action was taken.

With strike action set to affect thousands of children across the UK, what reasons have teachers given for the decision?

Haven't we been here before?

Yes and no. In July 2014, NUT members took part in a day of action alongside members of UNISON, UNITE, GMB, PCS and the FBU.

At the time, the NUT cited pay, pensions and workload as three key reasons for walking out. According to the union, pension contribution increases and pay restraint had meant that teachers had seen a 15 per cent fall in the value of their take home pay.