"Eating Watermelon" Understanding Fractions PPT

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"Eating Watermelon" Understanding Fractions PPT

Part One: Learning Objectives

1. Experience the process of solving practical problems, explore and master the calculation methods of adding and subtracting fractions with the same denominator, and be able to calculate correctly.

2. Be able to use addition and subtraction of fractions with the same denominator to solve some simple practical problems.

3. Experience the rigor of mathematics in the process of solving practical problems.

Eating watermelon PPT, part 2: interpretation of examples

1. What fraction of the watermelon did Big Bear and Little Bear eat in total?

2. How much more of the watermelon did the big bear eat than the little bear?

3. What fraction is left?

Eating watermelon PPT, the third part: summary

Simple calculation of fractions

(1) If fractions with the same denominator are added, the denominator remains unchanged and the numerators are added.

(2) When subtracting fractions with the same denominator, the denominator remains unchanged and the numerator is subtracted.

(3) Calculation method of subtracting fractions from 1: First rewrite 1 into a fraction whose numerator and denominator are the same as the denominator of the subtrahend, and then calculate.

Eating watermelon PPT, part 4: quiz in class

Paint it and do the math.

Paint 1/10 of a rectangular paper red and 3/10 blue. What percentage of the paper is the uncolored part?

What fraction of this paper did they use in total? What fraction is left?

Eating watermelon PPT, Part 5: Homework

1. Choose from the after-school exercises.

Keywords: Beijing Normal University version third grade mathematics PPT courseware free download, eating watermelon PPT download, understanding fractions PPT download, .PPT format;

For more information about the "Knowing Fractions and Eating Watermelon" PPT courseware, please click on the "Knowing Fractions and Eating Watermelon" PPT courseware.

"Eating Watermelon" PPT download of understanding fractions:

"Eating Watermelon" Understanding Fractions PPT Download Part One: Learning Objectives 1. Combined with the problem-solving process, explore the calculation method of adding and subtracting fractions with the same denominator. 2. Be able to correctly calculate the addition and subtraction of simple fractions with the same denominator. 【Key points】Be able to calculate simple equal points..

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Update Time: 2024-10-18

This template belongs to Mathematics courseware Beijing Normal University Edition Third Grade Mathematics Volume 2 industry PPT template

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