Spotting numbers: Background Information | 
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| Summary | Make and change dot patterns. The applet will count the number of dots you use fro each color. A series of problems goes with this applet, see 'Spotting Numbers Problems'. | 
| Subject | algebra, calculus | discrete mathematics | 
| Age Group | middle school (gr. 7-8) | high school (gr. 9-10) | high school (gr. 11-12) | 
| Programmer | Huub Nilwik | 
| Author | Huub Nilwik | 
| Version | revised version | 
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