在探索减法策略时使用的41张拼写教学演示。
This教学演讲, which includes animations, has been designed to explain a variety of commonly usedmental computationstrategiesforsubtraction.
在转到减法的书面垂直算法之前，为这些心理计算策略奠定了强大的基础并理解。
As there are a number of strategies covered in this presentation, it is assumed that the slides will be viewed over numerous lessons.
The following strategies are addressed:
- 倒数
- counting on
- using known facts such asrainbow facts,doubles, subtracting 10
- making tens (分区to numbers that end in zero)
- using事实家庭为了减法而考虑增加
- jump strategy
- split strategy
- 重组（交易）。
This PowerPoint includes hyperlinks to the following subtraction teaching resources:
0 Comments
写一份评论，以帮助其他老师和父母像您一样。如果您想请求对此资源的更改或报告错误，请选择上面的“相应的选项卡”。