DIY Girlander til 17. mai
Dette trenger du: Saks, Litt tykke ark, gjerne i rødt, hvitt og blått. Tips: Du kan bytte ut ark med...
Balloons are colourful and light. Does the air inside them weigh anything at all, you might have wondered. Lakshmi has. So she and her classmates find out if air has any weight at all.