Number Line: Operations

这个模拟程序还没有被翻译.你可以仍然使用英语版本的程序

Number Line: Operations 屏幕截图  下载  嵌入代码
  • Operations
  • 数轴
  • Integers

主题

  • Operations
  • 数轴
  • Integers

描述

Explore operations with integers using an authentic context of net worth, then generalize with a number line. Experiment with adding and subtracting both positives and negatives, and make predictions about whether the total will be positive or negative.

示范 学习目标

  • Represent addition and subtraction of integers on a horizontal number line
  • Reason about addition and subtraction of integers in terms of number-locations
  • Use logical necessity to reason that addition has the opposite effect as subtraction or that adding (or subtracting) a negative integer has the opposite effect as adding (or subtracting) a positive integer.
  • Recognize and generate equivalence classes of integer sums and differences
  • Show that a number and its additive inverse (opposite) have a sum of 0
  • Using a net worth context, describe situations that have a positive sum or difference, negative sum or difference, and zero sum or difference
  • View adding a negative as equivalent to subtracting a positive, and explain why this relationship makes sense in contexts such as net worth.
  • View subtracting a negative as equivalent to adding a positive, and explain why this relationship makes sense in contexts such as net worth.
  • Apply a number line model for addition and subtraction to new contexts.

标准对齐

Common Core - Math

7.NS.A.1
Apply and extend previous understandings of addition and subtraction to add and subtract rational numbers; represent addition and subtraction on a horizontal or vertical number line diagram.
7.NS.A.1a
Describe situations in which opposite quantities combine to make 0. For example, a hydrogen atom has 0 charge because its two constituents are oppositely charged.
7.NS.A.1b
Understand p + q as the number located a distance |q| from p, in the positive or negative direction depending on whether q is positive or negative. Show that a number and its opposite have a sum of 0 (are additive inverses). Interpret sums of rational numbers by describing real-world contexts.
7.NS.A.1c
Understand subtraction of rational numbers as adding the additive inverse, p - q = p + (-q). Show that the distance between two rational numbers on the number line is the absolute value of their difference, and apply this principle in real-world contexts.
7.NS.A.1d
Apply properties of operations as strategies to add and subtract rational numbers.
版本 1.0.1

教师指南

下载教师指南 PDF 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

Integer Addition and Subtraction Assessment Gillian Walker 初中
高中
家庭作业
Remote
实验室
数学

HTML5 程序:

新的HTML5类型的程序可以在iPad,Chromebook以及PC端(包含mac和linux系统)上运行。

iPad:

iOS 8+ Safari

iPad2或之后的iPad产品支持HTML5类型的程序。如果您是iPad用户,请点击这里。


Android:
无官方支持。如果您需要在安卓平台运行HTML5程序,我们建议您使用最新版本的谷歌浏览器和安卓4.1+版本。

Chromebook:
您只需要最新版本的谷歌浏览器。HTML5和flah程序都可以在所有Chromebook上运行。如果您是Chromebook用户,请点击这里

Windows 系统:
微软浏览器,IE11浏览器,火狐浏览器和谷歌浏览器的最新版本都可以运行HTML5程序。

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:
无官方支持。请联系phethelp@colorado.edu。


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
内存: 256 MB
浏览器: 微软Edge浏览器,IE 11浏览器,火狐浏览器,谷歌浏览器

Macintosh 系统:
Mac OS X 10.9.5+
使用管理员身份以便安装
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
浏览器: 火狐,谷歌

开发团队 第三方支持 感谢
  • Amanda McGarry (lead design)
  • John Blanco (lead developer)
  • Ariel Paul
  • Kathy Perkins