温州数字教育资源网-温州市教育局-可汗学院：新加坡数学-0010.10

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课程大纲

00:00:00

Introduction to Singapore Math

The speaker introduces the Singapore Math teaching method, emphasizing its focus on deep conceptual understanding through various perspectives, even for seemingly simple concepts like addition and subtraction.
00:00:47

Understanding Addition and Subtraction

This section explains the basic definitions of addition and subtraction using the terms 'sum' and 'difference,' and explores how these operations are interpreted in practical examples.
00:01:55

Sum: Combining Quantities

The speaker demonstrates how to calculate the sum of two numbers—specifically 4 and 7—using visual representations. The commutative property is also introduced.
00:02:54

Difference: Measuring Distance Between Numbers

This section delves into the concept of difference, explaining it as the distance between two numbers. The speaker uses examples such as 4 and 7 to illustrate how difference can be calculated by subtracting the smaller number from the larger one.
00:04:20

Visualizing with Cubes

Using cubes in a Singapore Math style, the speaker visually represents numbers (such as 8 and 5) to demonstrate both sum and difference, reinforcing the conceptual understanding of these operations.
00:08:18

Applying Concepts to Larger Numbers

The speaker applies the concepts of sum and difference to larger numbers (90 and 54), using real-world analogies and place value techniques to explain how these operations work at a deeper level.
00:13:39

Relationship Between Sum and Difference

In this final segment, the speaker explores the interplay between sum and difference, showing how they are inverse operations and how they can be used to understand relationships between numbers.