# 分数：入门

 下载 嵌入代码 关闭 嵌入模拟程序控制 你可以通过改变嵌入的代码改变程序的宽度和高度 插入一张图片，当点击这个图片时启动仿真程序。

 初始仿真程序 以及翻译

• 分数
• 等值分数
• 可约分数
• 数轴

### 示范 学习目标

• 预测和解释如何改变分数的分子来影响分数的值。
• 预测和解释如何改变分数的分母来影响分数的值。
• 在一个分数找、数字部分的一个图像和一个在数轴上点之间进行转换。
• 使用数字和图片出匹配的分数。
• 使用不同的数字使分数等值。
• 在不同的图像模式中匹配分数。
• 使用数字和图片匹配分数。

### 标准对齐

#### Common Core - Math

1.G.A.3
Partition circles and rectangles into two and four equal shares, describe the shares using the words halves, fourths, and quarters, and use the phrases half of, fourth of, and quarter of. Describe the whole as two of, or four of the shares. Understand for these examples that decomposing into more equal shares creates smaller shares.
2.G.A.3
Partition circles and rectangles into two, three, or four equal shares, describe the shares using the words halves, thirds, half of, a third of, etc., and describe the whole as two halves, three thirds, four fourths. Recognize that equal shares of identical wholes need not have the same shape.
3.G.A.2
Partition shapes into parts with equal areas. Express the area of each part as a unit fraction of the whole. For example, partition a shape into 4 parts with equal area, and describe the area of each part as 1/4 of the area of the shape.
3.NF.A.1
Understand a fraction 1/b as the quantity formed by 1 part when a whole is partitioned into b equal parts; understand a fraction a/b as the quantity formed by a parts of size 1/b.
3.NF.A.2
Understand a fraction as a number on the number line; represent fractions on a number line diagram.
3.NF.A.2a
Represent a fraction 1/b on a number line diagram by defining the interval from 0 to 1 as the whole and partitioning it into b equal parts. Recognize that each part has size 1/b and that the endpoint of the part based at 0 locates the number 1/b on the number line.
3.NF.A.2b
Represent a fraction a/b on a number line diagram by marking off a lengths 1/b from 0. Recognize that the resulting interval has size a/b and that its endpoint locates the number a/b on the number line.

### 教师指南

 仿真程序控制概述,简化模型,学生视角的思考 ( PDF ).

### 教师提交的活动

Games Remote Lesson ideas Trish Loeblein 高中
K-5

Remote

What is a Fraction? Anonymous K-5 其它 数学
Comparing and Ordering Fractins Day 2 of 3 Meaghan Hixson K-5 指导 数学
What is a Fraction? Day 1 of 3 Meaghan Hixson K-5 指导 数学
Building Fraction Sense Using “Fractions Intro PhET Simulation” Philippe Guegan 初中
K-5

Equivalent Fractions Day 3 of 3 Meaghan Hixson K-5 指导 数学
Fractions 3 Day Unit Meaghan Hixson K-5 指导 数学
SECUNDARIA: Alineación PhET con programas de la SEP México (2011 y 2017) Diana López 初中

PRIMARIA: Alineación con programas de la SEP México (2011 y 2017) Diana López K-5

How do PhET simulations fit in my middle school program? Sarah Borenstein 初中 其它 生物学

Explorando as frações Ana Marta Espindola Marlise Honório de Oliveira Maria Aparecida F. Martinez Viviane Soares da Silva Juçara Aparecida Rosa K-5 其它

Fração Elenice Santos, Priscila Flores, Priscila Roemers, Patricia Botelho, Benta Souza 初中 实验室 数学
Introdução a problemas com frações Manoel Bento, Alessandra Rodrigues, Elaine Martins, Juliano Flor K-5 实验室 数学
Le frazioni simone 初中 指导 数学
Naming Fractions Bettie Parker K-5 讨论

분수 소개 SIM 사용설명서 이화국(Wha Kuk Lee) 初中 家庭作业

### HTML5 程序：

iOS 8+ Safari

Android:

Chromebook:

Windows 系统:

Macintosh 系统:
OS 10.9.5 或之后的系统版本，Safari 9+版本，或者火狐浏览器，谷歌浏览器的最新版本均支持我们的程序。

Linux 系统:

### Java and Flash 程序：

Java 与 Flash程序可以在PC端，mac端，及linux系统上运行。具体的系统配置要求如下：

Windows 系统:
Windows 10, 8.1, 7

Macintosh 系统:
Mac OS X 10.9.5+

64位浏览器（例如Safari，火狐，谷歌等）

Linux 系统:
Oracle Linux 5.5+1
Oracle Linux 6.x (32位), 6.x (64位)2
Oracle Linux 7.x (64位)2
Red Hat Enterprise Linux 5.5+1, 6.x (32位), 6.x (64位)2
Ubuntu Linux 12.04 LTS, 13.x
Suse Linux Enterprise Server 10 SP2+, 11.x

• Sam Reid (original developer)
• Martin Veillette (developer)
• Michael Dubson
• Trish Loeblein
• Amanda McGarry
• Kathy Perkins
• Vincent Davis
• Michael Moorer
• Dusty Cole
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