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### Activities

- Fibonacci Numbers Excel spreadsheet
- Public key cryptography Maple worksheet
- Proof of the Theorem of Pythagoras animated using Geogebra
- Geogebra version of Mindscape 21 in Section 4.1
- Circle of Spheres worksheets (in three pieces due to file size)
- Target Practice (GeoGebra version)
- Cycle Practice (GeoGebra version)