マイナス☓マイナスはプラス２

What do you want to download?

You can either download the .ggb file alone or the complete webpage for students with tasks.

I agree to the terms of GeoGebra's non-commercial licence

• Offline Activity (.zip)

• GeoGebra Files

  1. マイナス☓マイナスはプラス２ (.ggb)