Grade 5-11，Awards and Certificates of Innovations
In my elementary school, starting from grade 3, children can join various school clubs for free after school. At that time, I signed up for the invention and creation club,…
Grade 8-Feb.2022 DIY An Insulated lunch box cover
My father often works overtime, the food left for him often may get cold after he returns, so I tried to make an insulated lunch box set to ensure that…