He used to be a teacher of maths in that primary school.

他曾经是名教习，在那所小学教数学。

youdao

In maths and science boys and girls perform much the same at primary school, but at age 15 boys do rather better than girls in maths (though not science).

小学阶段男性和女性在数学和科学方面表现相当，但在15岁之后男性在数学方面的表现会超过女性(在科学方面仍然相当)。

youdao

I teach maths in a primary school.

我在一所小学教数学。

youdao

The government said it had already instigated top-to-bottom overhaul of maths in schools, extending from primary school to A-level.

BBC: Rushed maths leads to 'superficial' learning, report says

The activists who trooped to London's Connaught Rooms on a wet Saturday applauded the traditionalist elements of David Cameron's address, such as the return of competitive school sport and a ban on calculators in primary school maths tests.

BBC: With the grassroots at Tory spring conference

In maths and science boys and girls perform much the same at primary school, but at age 15 boys do rather better than girls in maths (though not science).

ECONOMIST: A world of bluestockings