Addition in Other Bases
written by Teresa Carrigan
- What is it?
- How it works
- How to use it
- Things to notice
- Things to try
- Extending the model
- NetLogo features
- Related models
- Credits and References
- For more information
- Run model in your browser
- Download the model
- Single webpage version
HOW TO USE IT
The setup button generates a random addition problem. The base used is determined by the base slider, and then maximum number of digits for each number is determined by the number-of-digits slider.The number-of-digits slider sets the number of digits that the count will hold the next time the setup button is pressed. Possible values range from two to ten.
The base slider sets the base to be used the next time the setup button is pressed. You may choose any base from two to sixteen.
The random button changes the values of the base and number-of-digits sliders and then sets up a new addition problem.
The slow-motion slider is an easy way to adjust the speed of the display so you can watch the digits change as the red arrow passes. Set it to zero if you want to just see the answer quickly.
The step button adds the next column of digits, and then stops so you can take notes.
The go button processes the remaining columns of digits, at a speed set by the slow-motion slider. This is useful when you do not need to take notes between each step, or do not wish to press the step button several times to get an answer. If you want to pause the demonstration, simply click the go button a second time and it will stop after it finishes the current step. You may then click go a third time to resume.
If the random-quiz? switch is on, then quiz questions can come from any base and any number of digits. If it is off, then quiz questions are generated from the base and number of digits specified by the sliders.
The quiz button will generate a random addition problem and ask you for the answer. For bases larger than ten, you do not need to capitalize digits that are letters. You are not required to pad leading zeroes to the correct number of digits, but do not include any overflow digit. Spaces and commas in your answer will be ignored, so use them freely to avoid copy errors.
The show-again button starts the exact problem from the beginning. You may then click either the step button or the go button to see the same demonstration.
HomeApplets on this website were written by Teresa Carrigan in 2004, for use in computer science courses at Blackburn College, with the exception of the Fireworks applet. The applets made with NetLogo require Java 1.4.1 or higher to run. The applets made with NetBeans require Java 1.4.2 or higher to run. Applets might not run on Windows 95 or Mac OS 8 or 9. You may obtain the latest Java plugin from Sun's Java site.