Workload = working efficiency × working time = workload ÷ working time
Working hours = workload ÷ work efficiency = sum of workload to complete a task = total workload = 1
The concept of engineering problems
It is the focus of mathematics application problem teaching in primary and secondary schools, the extension and supplement of fractional application problem, and an important tool to cultivate students' logical thinking ability. It is a powerful penetration of the idea of one-to-one correspondence of functions in application problems. The engineering problem is also the difficulty of the textbook.
Basic characteristics of engineering problems
Let the total workload be "1" and the work efficiency be = 1/ times.
Basic methods of engineering problems
Arithmetic method, proportional method, equation method.
The basic idea of engineering problems:
Do it together, do it together.