DIY silly, STEM-themed Christmas crackers

Christmas crackers
Skip the mini plastic figurines and pack your bon bons with science-themed funnies. Image: Shutterstock

Minimise your carbon footprint these holidays while upping the funny factor, with DIY Christmas crackers stuffed with silly science jokes

Christmas lunch is awesome and all, but so are old school bon bons stuffed with daggy hats and silly jokes! And if staying eco conscious is up there on your holiday wish-list, making your own is an awesome way to cut back on waste.

How to make your own Christmas crackers

In a sentence or two? Cover a toilet roll with recycled wrapping paper, stuff it with a silly STEM-themed joke (or 10), throw in a daggy paper hat (try making your own) and pop in a thin cardboard stick that peeks out either side.

The best bit however is picking the hilarious jokes to pop inside – STEM-themed, obviously. Here are 12 of the best, and their explanations for any puzzled family members. Fingers crossed they spark some pre-pudding science banter.

Silly, science-themed jokes ideas

Q. Why are chemists great at solving problems?
A: Because they all have solutions!

Huh?! Chemists hang out in labs experimenting with chemical solutions – a mixture composed of two or more substances (like air or water).

Q: What is the name of the first electricity detective?
A: Sherlock Ohms!

Huh?! An ohm is measure of electrical resistance. Sherlock Holmes, is the detective.

Q: Did you hear oxygen went on a date with potassium?
A: It went OK!

Huh?! When put together, the atomic symbols for oxygen (O) and potassium (K) spell out OK.

Spark some pre-pudding science banter, with silly STEM-themed crackers. Image: Shutterstock

Q: What kind of bear dissolves in water?
A: A polar bear!

Huh?! Polar compounds dissolve in water because water is a polar molecule, whereas non-polar compounds don’t.

Q: Where does a bad light end up?
A: In a prism!

Huh?! A prism separates white light into colours, which kind of sounds like “prison.”

Two chemists walk into a bar. The first says, “I think I’ll have an H20!” and the second says, “I think I’ll have an H20 too!” Both cheers and take a sip – and the second chemist dies.

Huh?! H20 is the molecular formula for water, but H202 is the formula for hydrogen peroxide, which will kill you if you drink it. Whoops!

Q: How did the English major define microtome on his biology exam?
A: “A tiny book!”

Huh?! A microtome is used by biologists to cut very thin tissue sections, but to an English major a tiny (micro) book (tome) would probably make more sense.

Q: What do you call a fish made of two sodium atoms?
A: 2Na

Huh?! The atomic symbol for sodium – Na –  sounds “na.”So two “nas” = “two na” AKA tuna. Anyone not LOLing may need another explainer!

Q: Did you hear about the recycling triplets?
A: Their names are Polly, Ethel and Ian!

Huh?! Polyethylene is the most common type of plastic.

Biology is the only science in which multiplication is the same thing as division.

Huh?! In biology, when a cell divides into two cells multiply!

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Cassie Steel

Author: Cassie Steel

As Refraction’s digital editor, Cassie Steel spends her days researching robots and stalking famous scientists on Twitter.

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