HomepagearuteacherPopular puzzles created by aruteacher Popular puzzles created by aruteacher 56Natural Resources 6 °aruteachersolved 127 timesSolve puzzle 64Tools and Artifacts 2 °aruteachersolved 111 timesSolve puzzle48Technological instruments 7 °aruteachersolved 102 timesSolve puzzle64Artifacts 3 ° (3P)aruteachersolved 100 timesSolve puzzle54Structures 11 °aruteachersolved 92 timesSolve puzzle64Environment 8 °aruteachersolved 80 timesSolve puzzle63Food Industry 9 °aruteachersolved 80 timesSolve puzzle 32Prototypes 4 °aruteachersolved 60 timesSolve puzzle64Metrology 10 °aruteachersolved 57 timesSolve puzzle45Technological problems 5 °aruteachersolved 53 timesSolve puzzle