What's new

Hands-on posts

Pulling pulleys Activity

by David, 26 July 2018 | 2 comments

Photo of a bobbin attached by a loop of string to a drink bottle, with another srting loop going upwards out of the shot.

Have you ever wondered how cranes can lift such heavy things? Their pulleys really help lighten the load. In this activity, have a play with some pulleys. These simple machines can make heavy weights as light as a feather!

Continue reading Pulling pulleys

Lava fizz Activity

by David, 12 July 2018 | 2 comments

Lava lamps look super cool, but they can be expensive and hard to find. With this activity, you can make your own bubbly lava and learn a bit about oil and water!

Continue reading Lava fizz

Invisible glass Activity

by David, 28 June 2018 | 0 comments

Glass of water with a ock floating in it.

Find out more about invisibility by hiding a glass jar in plain sight. Then, use the jar to create a clever illusion, making a rock appear to float mysteriously!

Continue reading Invisible glass

Categories:

Shrinking plastic Activity

by David, 14 June 2018 | 2 comments

Image of a tiny giraffe held between someones fingers.

Have you ever wanted to draw really small pictures? Here’s a trick – you can just draw normal sized ones, and then use some special plastic to shrink them!

Continue reading Shrinking plastic

Play Scopa Activity

by David, 17 May 2018 | 0 comments

Some playing cards

Here’s a traditional card game that’s bound to get your brain pumping. Being able to add up will help, but there’s plenty more to puzzle over!

Continue reading Play Scopa

Categories:

Make a cloud Activity

by David, 3 May 2018 | 0 comments

Photo of a glass jar with water in the bottom and a baloon stretched over the opening.

Create a cool cloud inside a jar using these instructions.

Continue reading Make a cloud

The language of the web Activity

by David, 19 April 2018 | 2 comments

Image of an open laptop screen and keyboard.

Have you ever wondered how a web page gets made? It involves using hypertext markup language, HTML. Read on to discover some of the secrets of HTML, then use it to make your own meme.

Continue reading The language of the web

Categories:

String Tower Activity

by David, 5 April 2018 | 0 comments

A piece of string, knotted at regular intervals, being held srtaight by three plastic strips which attach to the knots in the string.

How do you make string stand on its end? To find out, read on…

Continue reading String Tower

Balloon bus Activity

by David, 22 March 2018 | 2 comments

Photo of a man sitting on a bus holding a red balloon on a string.

When you’re on a bus, corners can push you sideways. But what does it do to a balloon? Grab a balloon and get on board to learn a thing or two about inertia.

Continue reading Balloon bus

Want to launch a rocket? Competition

by David, 9 March 2018 | 17 comments

A rocket kit

To celebrate the launch of Double Helix Extra, we’ve scoured the Double Helix prize cupboards and found some fantastic little rockets to give away. These Liquifly Fizz Rockets take vinegar and bicarb and turn them into motion! Simply measure in the fuel, and the rocket will fly more than five metres.

Continue reading Want to launch a rocket?

Categories: