Experiment amb pa de motlle

Fa uns quants dies els nens i nenes de la classe de les Llunes vam iniciar un experiment, consistia en tocar una llesca de pa de motlle amb les mans brutes (tal com les tenim a l’entrar del pati) i una altra amb les mans ben netes. Tot i fer exactament el mateix a les dues classes, vam obtenir resultats ben diferents.

Després d’investigar què havia passat, vam arribar a la conclusió que el pa que vam fer servir a les dues aules era diferent, un 100% natural i l’altre, un pa de motlle normal com el que trobem als supermercats. En el pa 100% natural els bacteris i microbis que portem a les mans quan les tenim brutes van provocar que en aquest es florís, mentre que el pa amb conservants, va quedar intacte.

La veritat és que ens ha sorprès molt el resultat de l’experiment i una cosa ens ha quedat molt la clara, la importància contrastada de rentar-nos les mans abans de cada àpat.

ZOOPLANKTON PROJECT:Hatching Brine Shrimp Eggs

This week we’ve prepared a salt solution and we’ve put two table spoons of brine shrimp cysts into it.
Brine shrimps are also called artemias or sea monkeys.

The eggs should hatch in 48-72 hours. Constant aeration is also needed.
We will keep you updated about our babies!

Amazing Science: How to make soap from recycled oil

Today we’ve made soap from recycled oil! This laboratory experiment is part of our Polar Bear Project.
Students from the 1st year of A levels have shown us how to make soap.
This is their recipe:
250 g of recycled oil
250 ml H2O
5 g salt
35 g caustic soda
some drops of lavender water
colourant

It has been so amazing!
Look at the pictures.





BUILDING A BALLOON ROCKET

In K5 Science we have built a balloon rocket. We’ve had so much fun! Here are the instructions:
-Thread one end of the string through the straw
-Tie each end of the string between two solid supports such as a chair, table leg or door knob, making sure it is strung tightly.
-Blow up the balloon but do not tie it.
-Holding the opening of the balloon closed with your fingers, tape one side of the balloon to the straw so that it hangs horizontally below the string.
-Get ready for launch and let the end of the balloon go. Watch as the air escapes and sends your balloon rocketing across the string track!
READY STEADY GO,