Technologically Embodied
Geometric Functions
Adding & Subtracting Integers

▹︎︎ Overview

 

In this activity you’ll use a number line to add and subtract positive and negative integers.

▹︎︎ Add Integers

 

Download worksheet       Hint Videos will go here.      

Use this sketch to add two integers on the number line. You can drag the circles to change the numbers.

Press the Present All button to add the numbers.

What do you notice about the direction of positive and negative integers? What do you wonder?

What do you notice about where the second integer goes on the number line?

Download the worksheet. Then do the problems, and answer the questions, on your worksheet.

▹︎︎ Subtract Integers

 

Download worksheet       Hint Videos will go here.      

Use this sketch to subtract two integers on the number line. You can drag the circles to change the numbers.

Press the Present All button to subtract the numbers.

What do you notice about where the second integer goes on the number line? What do you wonder?

Download the worksheet. Then do the problems, and answer the questions, on your worksheet.

▹︎︎ The Fine Print

Requirements:

These activities require web access using a browser that supports HTML5 and JavaScript. (That means almost any current browser.) No purchase is required, and there’s no advertising anywhere.

Release Information:

2015Q4Update1, Semantic Version: 4.5.1-alpha, Build Number: 1020, Build Stamp: ip-10-149-70-76/20160706123730
Web Sketchpad Copyright © 2015 KCP Technologies, a McGraw-Hill Education Company.
“You may freely use Web Sketchpad in your own Web pages, provided you do so for non-commercial use only” [per kcpt.github.io].
Activity License: Creative Commons CC-BY-NC-SA 4.0

Update History:

16 Mar 2017: Used toggling sections, cleaned up formatting, fixed a sketch bug.
15 Dec 2016: Revised Getting Started and Slope Game to emphasize the movement of the dependent variable. (Modify Rate of Change game similarly?)
12 Dec 2016: Refined the directions for the two games, and made technical improvements in the page's JavaScript.
05 Nov 2016: Created this page using a new format for activities

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