Students with their parents decide which is the most appropriate structure by voting through the application here: https://linkto.run/p/BQNP6R3Y
![](/files/collabspace/5/05/505/96505/images/cd12edf56_opt.jpg)
Vote results: Rocket ballon
![](/files/collabspace/5/05/505/96505/images/c2113192c_opt.jpg)
Then they record the construction materials here: http://listmoz.com/#vsx6Xr2ZCxFRbjRDWtp2