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| Building houses | |
| The idea is to build up a solid shape of your chosing, either by day or by night. |
| Build by night This time there are 10 problems to solve. |
| Building challenges There are 10 problems to solve. |
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This applet was developed by the Freudenthal Institute www.fi.uu.nl and available on the WisWeb website www.wisweb.nl. It is used with their permission. |
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