| Ellipses | Graphical objects in motion. |
| Hanoi | Recursive function. |
| Loop | Quadratic splines. |
| Primes | Eratosthenes' sieve. |
| Monty Hall | Is there a best strategy? |
| Sliding puzzle | An old friend. |
| Elastic kinetics 1 | Balls with rubber strings. |
| Elastic kinetics 2 | Nervous strings. |
| Screen colors | rgb-values. |
| dec-hex conversion | Used in color coding. |
| In progress! |