An elementary function is one of the basic functions in mathematics.

He lost everything.

She is planning a date with her current boyfriend.

My boyfriend gave me a gift.

Everyone was surprised by the news.

My teaching practice will start from next week.

My child is currently learning educational kanji.

He is an expert in pedagogy and is deeply involved in the educational activities of children.

He is known as an expert in pedagogy.

We learned about the importance of sex education at school.