Dear, please remember the counting principle first. Classification is addition (in no particular order) and step by step is multiplication (in no particular order).

Summary: classification is addition, and step by step is multiplication.

We can do one thing in several ways. This is called classification. For example, from A to B, we can use several different ways, such as walking, subway, bus, taking a taxi, riding a bike and so on.

We need to do one thing in several steps, which is called step by step. For example, cooking, ① prepare raw materials first → ② wash vegetables and cut into pieces → ③ stir-fry.

Today is 102 days from the 2020 college entrance examination, less than 15 weeks. Teacher Dapeng and my team of teachers wish the college entrance examination students (cultural students, art candidates, physical education students, ...) great success!