"Beachside" PPT courseware

Description

"Beachside" PPT courseware

teaching objectives

Master the vertical calculation method of adding two digits plus two digits (without carry), and initially master the basic requirements and format of vertical calculations.

Experience the process of exploring the calculation method of adding two digits to two digits within 100, experience the diversity of algorithms, and develop the accuracy, agility and flexibility of thinking.

Classmates, look at what the children are doing?

What mathematical information can you get from the picture?

1. Xiaolan caught 12 crabs and Xiaotao caught 26 crabs.

How many crabs were caught in total?

2. Xiaoli caught 11 prawns and Xiaolong caught 23 prawns.

How many prawns were caught in total?

There are three ways to calculate the addition of two-digit numbers plus two-digit numbers without carry.

Method 1: Add the tens digit to the tens digit, and add the ones digit to the units digit. Then add the two results.

Method 2: Dial the counter

Method Three: Vertical Column

Students: What is the rule of vertical addition?

Use vertical calculations, and the same digits must be aligned

Summary of the whole lesson

What did you learn from this lesson? Can you tell me something?

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For more information about the "Big Beach" PPT courseware, please click on the Big Beach ppt tab.

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File Info

Update Time: 2024-10-02

This template belongs to Mathematics courseware Qingdao Edition First Grade Mathematics Volume 2 industry PPT template

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