Make your own Magnifying Glass!

Playing detective is one of my little ones favourite games, but to be a real detective involves lots of Science! So today we’re going to make a magnifying glass.

All you need is...

A clear plastic bottle

A dry marker pen

A pair of scissors


How to make your own magnifying glass, Science Sparks

How to make…

1. Draw a circle shape at the neck of the bottle. It needs to be here so you create a disc shape when you cut it out.

How to make a Magnifying Glass, Science-Sparks

2. Cut out the circle

3. Pour a little water into the disc.

How to make a Magnifying Glass, Science-Sparks

4. Hold it over your book or paper to make the letters bigger. It really works so well!

How to make a Magnifying Glass, Science-Sparks

The science bit.

The disc shape you have cut out curves outwards, so is a convex shape. By adding the water the light that passes through is refracted meaning that it is bent inwards, creating a lens effect and enlarging the size of the letters. So you have then created your very own magnifying glass!

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Author: Emma Vanstone

Science Sparks, is a site dedicated to making Science fun for kids. I’d love you to follow me on my Google Profile+.

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  1. So cool! We are definitely going to try this. Thanks

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  2. That is such a neat idea – can’t wait to try this out with the kids!

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  3. Oh yes, this is super cool! I better run and dig those bottles out of the trash can:)

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  4. Oh, how neat!! My daughter would love this. We will definitely have to give it a try. Thank you for sharing at Sharing Saturday!! I hope you are having an amazing week!

    Oh, and on another note, have you seen the latest issue of Family Fun Magazine? They have a craft/activity very similar to your lung one. I thought of you when I saw it.

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    • Let us know if you try it. Is Family Fun online?

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  5. Everyone says this is great for the kids, i am 25 and i LOVE this. Its so cool, making your own magnifying glass, how clever :)

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