Calculate

  This page is part of Math on the XO project.

for other calculator activities, see calculation

Calculate This activity was bundled sources in projects/calculate TST Calculate Tickets all - active - new Pootle — POT Reinier Heeres, Miguel Alvarez .xo Bundle – Calculate-19.xo see more templates or propose new

Description & Goals

Summary

The calculate activity provides a generic calculator. The interface provides the simplest functions directly and should therefore be easy to use for the youngest children. However, it does support more complicated math and variables.

Goals

Teach children some math

Collaboration

Basic collaboration is functioning. The history box shows equations entered by buddies in their own color.

Functionality

• Variables: type 'apples:5' (and tab-completion of variable names)
• Function plotting: type 'plot(sin(x),x=0..360)'
• To add Variables

   1)Type the name of the Variable in the Label box. 
   2)Then move to the next line down and Put in the amount of the Variable.  
   3)Push the enter button (On computer Screen)

Beginning Documentation

• Start-Up:

Desktop Showing Where to Click Calculate

   1)  After pressing the Power button, the main boot screen will begin to load                                   
   2)  After XO is completely booted, bring the mouse pointer down to the task bar at the bottom
       of the screen.
   3)  Arrow over until Calculate is highlighted
   4)  Select Calculate
   5)  Allow to Activity page to load

• Calculate Basic Functions:

   When Calculate is fully loaded this is the first screen you see is the Activity Page.
  The options consist of…
   1)  Edit
   2)  Algebra
   3)  Trigonometry
   4)  Boolean
   5)  Constants
   6)  Format

Basic calculation: Each of the buttons on the calculator are interactive and the calculator works the same as a normal calculator.

Calculator Function Tabs

• Edit:

Edit with Copy/Paste/Cut options

   Click Edit
   Simple editing options located on top of page.
   1) Copy: Highlight item then click Copy to Copy the information.
   2) Paste:  After the information has been copied, select this to paste it to where you would like
   3) Cut:  Cut removes the selected information from the screen and allows you to place it elsewhere.
   These Copy, Paste, and Cut functions can be used to take a previously used function and paste it
   back into the calculator.
   

• Algebra:

Algebra with 5 Choices

   Algebraic functions are displayed across the top bar
   1) Square:  Multiplies the result by itself
      Ex:  solution = 2  (Hit ‘square’ button) = 4
   2) Sqrt:  Short for Square Root, takes square root of a value.
   3) Exp:  Allows you to raise a value to an exponent that is different then 2.
   4) ln: Takes the Natural Log of a variable.
   5) Fac: Factorial function allows the user to take the factorial of the answer displayed.

Visual Design

Design by Eben

Screenshots

Screenshot of plot(y^2,y=-2..2)

Development

Source

git

RPMs

• none available