Grade 1 from FRANCE to CATALONIA
An underwater volcano in the classroom ? How is it possible ?
![](/files/collabspace/9/49/049/126049/images/b270bf882_opt.jpg)
How we did to solve the challenge before sending it to you ! CP Anne (1st grade)
First task : gather materials. Perhaps some materials will not be useful. Let see !
![](/files/collabspace/9/49/049/126049/images/ae6bfa84a_opt.jpg)
We have : water, sparkling water, oil, food coloring, glasses, effervescents tablets and matches.
First trial : oil, food coloring and sparkling water. It does not work.
![](/files/collabspace/9/49/049/126049/images/ad62712ca_opt.jpg)
Second trial : we add more food coloring and less oil but it does not work either.
![](/files/collabspace/9/49/049/126049/images/b5b751a8a_opt.jpg)
Last try : we add effervescent tablets and it works !
https://drive.google.com/file/d/1P54CQedfK9tKQKTScg-XOPI3fJtG6-Zk/view?usp=sharing