Mathematics education:

Teach students the calculation of numbers, known and unknown quantities, algebraic calculation, length, area, volume and so on.

Specific methods: traditional education, inspiring education, etc.

Mathematical research:

The relationship between quantity, known quantity, known quantity and unknown quantity, unknown quantity and unknown quantity, number and shape, and shape and shape.

Specific methods: calculus research, simple calculation, clever calculation; The combination of numbers and shapes, learning geometry with algebra and solving it with intuitive geometric figures make the problem simple and clear.

Variable substitution makes the calculation concise. Equation solving, clear thinking

Parity analysis, solving integer problems