NumberNinja is a command-line math training program designed for elementary school students to practice basic arithmetic in German. The program supports addition, subtraction, multiplication, and division, offering a customizable and interactive experience.
As a parent, I wanted to provide my children with a simple and distraction-free way to practice math for school. Many educational apps are overloaded with unnecessary features, ads, or gamification that often take away from actual learning.
NumberNinja was born out of the need for a straightforward, effective, and engaging tool that helps kids improve their arithmetic skills without distractions. By using a repetition-based learning approach, mistakes are not just forgotten but reinforced through practice, making learning more efficient.
With a clean command-line interface, NumberNinja allows kids (and adults!) to focus on what truly matters: mastering math skills in a fun and effective way.
- Multiplication: Practice times tables from 1×1 up to 10×10.
- Division: Solve division problems with whole numbers.
- Addition: Practice addition up to 10.
- Subtraction: Improve subtraction skills.
- Error Handling: Incorrect answers are repeated to reinforce learning.
- Statistics: A summary of performance is displayed at the end.
- Customizable Session: Set time limits and select specific arithmetic operations.
- German Language Support: All inputs and outputs are in German.
- Linux Compatible: Executable file runs on Linux systems.
Ubuntu Linux:
# Download the file from https://github.com/suckowbiz/numberninja Releases.
tar -xf NumberNinja.tar
./NumberNinjaOr
git clone https://github.com/suckowbiz/numberninja.git
cd numberninja
go run main.goOnce the program starts, you'll be guided through a series of input prompts:
Enter a number for the minutes you want to practice (e.g., 5 for 5 minutes).
- Multiplication (0)
- Division (1)
- Addition (2)
- Subtraction (3)
- Multiplication and Division (4)
- Addition and Subtraction (5)
- All operations (6)
The console will display a problem, for example:
1) 8 * 3 = Enter the correct answer and press Enter.
If you enter an incorrect answer, the problem will be repeated later.
After the time is up, the program will display your mistake statistics.
numberninja/
│── internal/
│ ├── calculus/ # Arithmetic operations & problem generator
│ ├── interaction/ # Command-line interaction
│ ├── school/ # Lesson logic (Lesson, Observer)
│ ├── mistakes/ # Mistake tracking (LIFO stack)
│── main.go # Program entry point
│── go.mod # Go module management
Licensed under MIT to allow doing anything with proper attribution and without warranty.