Cardboard Archive

A Homemade Balanced Mobile

Have you ever heard about Calder Mobiles? And I’m talking about the mobiles that hang from the ceiling and move with the wind… I must confess that didn’t know about them until I found this proposal on the “La main à la pâte” website, a French foundation. As an introduction to this session, we’ve been working on the balance and scales subject. And the construction of this balanced mobile is an …

3, 2, 1 … Go!

Following on with the same idea from ​​the previous session, we‘ll build rockets powered by the force of air, but this time using a little more power. You can find the detailed instructions in Exploratorium. To build the rocket launcher, you need a 2 liter plastic bottle, a flexible hose that fits into the mouth of the bottle and a rigid tube which also fits into the hose. Connect the …

Weather Station: Wind Sock

After the weather vane and the anemometer, we will end the wind observation devices making a wind sock. That will let us know the direction the wind blows from, and how hard the wind blows. To make a “mini” wind sock we need a toilet paper tube, paper napkin, string, and a needle.   We only need to cut off some strips from the napkin, and glue them to one …

Weather Station: Weather Vane

In the last days, the weather has been changing: windy days followed by rainy days, high temperatures, fog, thunderstorms…so we have started a project of meteorological observation to try to find out later why these phenomena occur. The first step has been to build a weather station to start the observation and data registration. We started building a wind vane to know the direction the wind blows from. We only …