"Replacement" Problem Solving Strategies PPT Courseware 2

Description

"Replacement" Problem Solving Strategies PPT Courseware 2

teaching objectives

1. Enable students to initially learn to use substitution strategies to analyze quantitative relationships and solve simple practical problems while experiencing the process of solving real-world problems.

2. During the continuous reflection on the process of solving real-life problems, students can feel the value of alternative strategies, accumulate experience in solving problems, and enhance their awareness of problem-solving strategies.

The milk in a large cup is about twice as much as in a small cup

Think about it:

(1) How many times can 1 large cup last for me?

(2) How many times can 2 small cups be enough for my daughter?

(3) Give me 1 large cup and 2 small cups. How many times can I drink it?

Xiao Ming poured 720 ml of juice into 6 identical small cups and 1 large cup, filling them all exactly. The capacity of the small cup is 1/4 of the large cup. What is the capacity of the small cup and the large cup?

"The capacity of a small cup is 1/4 of a large cup."

"The capacity of a large cup is 4 times that of a small cup."

Can it be solved by "replacing"?

Think: Think of them as ( ) cups, you can replace ( ) ( ) cups with ( ) ( ) cups. So, 720 ml is equivalent to the capacity of ( ) ( ) cups.

Method 1: If all 7 are small cups, there will be a total of (720-20) ml.

Method 2: If all 7 are large cups, there will be a total of (720+20×6) ml.

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Update Time: 2024-07-06

This template belongs to Mathematics courseware Jiangsu Education Edition Sixth Grade Mathematics Volume 1 industry PPT template

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