QUOTE]Teachers' unions gather in angry mood
Teacher union march The two teachers' unions have already announced plans for strike action in the summer and autumn
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Teachers announce series of strikes
No confidence in Gove, union says
The two biggest teachers' unions are gathering for their annual conferences, where they will challenge the government over pay, Ofsted inspections and England's academy schools.
The NUT and the NASUWT have already announced joint strike plans over pay, pensions and workload.
There is also likely to be a no confidence vote in Education Secretary Michael Gove.
The Department for Education has said it is "disappointed" by the strike.
Mr Gove has written to the union leaders saying he would meet them for talks but that there would be no re-negotiation of planned changes to teachers' pay and pensions.