Hi Jian, you did such a great job following instructions. Maybe you could write a set of instructions of how to make a tetrahedron for your brother to make. You could guide him through the process. What did you find challenging when making your tetrahedron? Mr Tyrell
Hi Jian, you did such a great job following instructions. Maybe you could write a set of instructions of how to make a tetrahedron for your brother to make. You could guide him through the process. What did you find challenging when making your tetrahedron? Mr Tyrell
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