What's new

Hands-on posts

Want to launch a rocket? Competition

by David, 9 March 2018 | 12 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?


Potpourri preservation Activity

by David, 8 March 2018 | 1 comments

A bowl filled with dried rose petals, orange peel and cinnamon sticks

Learn about the different parts of plants, as well as the science of preservation, by making your own pretty potpourri.

Continue reading Potpourri preservation

Double Helix Extra: your new email update! Update

by Jas, 28 February 2018 | 0 comments

10 year old holding tablet and atomic model.

Double Helix magazine is excited to announce that we’re merging our newsletters Science by Email and Maths by Email, and adding a splash of technology and engineering news. Keep an eye out for our new look email, called Double Helix Extra!

Continue reading Double Helix Extra: your new email update!

Blood-splatter by numbers Activity

by David, 16 February 2018 | 1 comments

A blood spot with measurements for width and length

Blood left at a crime scene can tell you a lot about the events. To rewind the clock and look back in time, you just need a ruler and some trigonometry. You will need Red food dye Chocolate topping (or corn syrup) Water Measuring cup Mixing bowl Spoon Drinking straw Old clothes A large sheet…

Continue reading Blood-splatter by numbers


Hanging by a thread Activity

by David, 27 November 2017 | 0 comments

a picture hanging from two pins

You’ll find yourself going a little loopy with this puzzle, but it’s worth unravelling the secret.

Continue reading Hanging by a thread


Ultimate dictators Activity

by David, 14 November 2017 | 0 comments

Julius caesar offers you some smarties

Psychologists often use simple games to determine how people make decisions when sharing and saving rewards, such as cash. In this case, we’ll explore the game of dictators using chocolate!

Continue reading Ultimate dictators


Len Choa Activity

by David, 3 November 2017 | 0 comments

A board with some counters on it.

Len Choa is a two player game from Thailand. It’s an asymmetric game, which means the two players have different rules to follow. In this game, one player controls a pack of six leopards, and their opponent controls one scary lion!

Continue reading Len Choa


Newspaper numbers Activity

by David, 11 October 2017 | 0 comments

Soemoen has circled $122 milion in a newspaper

Mathematicians can find patterns wherever there are numbers. In this activity, see if there’s a pattern in the numbers inside a newspaper!

Continue reading Newspaper numbers


Twisted snowflake Activity

by David, 27 September 2017 | 0 comments

A strange shape with rotational symmetry

Have you ever made a paper snowflake? Here’s a different twist on a classic craft activity.

Continue reading Twisted snowflake


How do you model a bushfire? Activity

by David, 13 September 2017 | 0 comments

a bushfire

Bushfires are destructive and dangerous. They can be fickle, but scientists are developing ways to predict their behaviour. This activity shows you one way that a scientist might think about bushfires.

Continue reading How do you model a bushfire?