The first grade math problem is coming 16 pupils. The teacher moved six chairs. How many chairs have not been moved?

Solution: 16-6= 10.

A: There are still 65,438+00 chairs that have not been moved.

In mathematical calculation, taking 15-8=7 as an example, children are likely to subtract 15 one by one with their fingers or small building blocks. After subtracting 8, they found that there were 7 left.

This algorithm is the most primitive and basic, but it is also the most time consuming. At first, children can be allowed to use this method, because for first-grade children, some concrete and vivid things are needed to help them make concrete and abstract deduction, so many children will use their fingers or small building blocks to complete the calculation, which is very normal.

Mathematical problem solving skills

When doing math problems, we advocate the diversification of algorithms, encourage children to think independently and communicate with each other, choose the algorithm that suits them best, cultivate innovative thinking and promote personality development.

If children only master their favorite methods, it is difficult to improve their thinking ability, and it is even harder to have divergent thinking ability. Therefore, encouraging children to learn to reflect and improve themselves by comparing their own algorithms with others can not only optimize their algorithms, but also optimize their learning, thinking and emotional awareness.