https://padlet.com/xiling00/87fbm5otx0xm Day 1-3: You need to chose 1 of 3 topics and discuss under the topic. You are also welcome to give out ideas for multiple topics. Day 4-7: You need to team up with other 2 students who attend different topics. You will start a new discussion with your team members, where you can tell other team members about your topic and conclusion. At the same time, you also need to give suggestions on how to improve other team member's design or conclusion. Day 8-12: Every group submit a report about hand warmers, which need to include all three topics you have discussed about. en-us 2017-11-09 00:36:06 UTC 2025-11-21 21:20:31 UTC hello@padlet.com xiling00 https://padlet.com/xiling00/87fbm5otx0xm/wish/205103291 Please check online for all the commercial available hand warmer and discuss about their mechanisms.]]> 2017-11-09 00:50:31 UTC https://padlet.com/xiling00/87fbm5otx0xm/wish/205103291 xiling00 https://padlet.com/xiling00/87fbm5otx0xm/wish/205103351 Please discuss about possible reactions, mechanisms and the design of the package to store and use it has hand warmer. (You can check the enthalpy change of reactions online.)]]> 2017-11-09 00:51:06 UTC https://padlet.com/xiling00/87fbm5otx0xm/wish/205103351 xiling00 https://padlet.com/xiling00/87fbm5otx0xm/wish/205103731 Please discuss about required equipments and calculation methods.]]> 2017-11-09 00:53:29 UTC https://padlet.com/xiling00/87fbm5otx0xm/wish/205103731