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Pringle dåse, plastik flaske der kan passe i dåsen, to lidt kraftige elastikker, blyanter, en saks, malertape

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Mælkeflaske, 4 kapsler fra mælk/ juice, sugerør i to størrelser, grillpinde, tape, balloner, pap, elastik

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Snor, bøjler, ovnrist og andet

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Spaghetti, marshmallows

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Et æg, tyndt pergament papir eller tyndt plastik, garn eller tandtråd, tape

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Gulerødder eller kartofler, marshmallows, vingummi, grillpinde, mælkekapsler, plasikflaske, tandstikker, måske lidt ler

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Lidt oregano, opvaskemiddel, karton

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Build a rubber band powered cannon from a crisp tin and a drinks bottle and use it to explore projectile motion and conservation of energy...or just knock down any target you can think of.

In this fun kids activity, Andrea Sella and his children experiment with materials to build the best catapult possible. They then use the slingshot to investigate how things fly through the air. By predicting and altering the variables, Andrea's sons get a feel for the scientific method while doing a great summer activity.

For more ideas and information, download the info sheet.

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Build a rubber band powered cannon from a crisp tin and a drinks bottle and use it to explore projectile motion and conservation of energy...or just knock down any target you can think of. In this fun kids activity, Andrea Sella and his children experiment with materials to build the best catapult possible.

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Musical coat hangers - At home science - ExpeRimental #8

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Homemade parachutes - At home science - ExpeRimental #9

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Balancing Sculptures - At home science - ExpeRimental #10

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At home science - Soap boat water experiment - ExpeRimental #14

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Blyant, papir, lineal, lim, saks, skabelon (Udprintet)

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We know that a toy car is much smaller than a real one, but when you hold a car up to your eye and compare it to a car in the distance, they can look the same size.

We intuitively understand this, but thinking about why this happens is the start of a fun experiment to investigate how our brains make sense of the three dimensional world around us. In this video, Dwain and Sahara learn a simple trick to make their drawings look three-dimensional, and then build an Ames room: a classic illusion that plays a trick on your mind with strange proportions.

Download the templates (here's a colour Ames room template, or a black and white Ames room template) to build your own model here. Do you think the illusion would work on a big scale too? Watch this video about a life-sized room we built for the 2011 CHRISTMAS LECTURES:

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We know that a toy car is much smaller than a real one, but when you hold a car up to your eye and compare it to a car in the distance, they can look the same size.