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Have you ever wanted a mechanical calculator? The Mechanical Addiator was invented back in 1846. Its simple design and compact size made it a popular mathematical tool in its time. This kit has all the parts to make an addiator and also a mechanical multiplier. Plus, it has a QR code to the study guide about how these machines work!
If you would like a chance to win an Arithmetic Kit, enter the competition on page 38 of your latest Double Helix magazine, issue 78.
Fi Morrison, STEM | ED Magazine
Each issue is based around a theme...which I believe is a fantastic way to tailor these magazines for student learning...
Why choose Double Helix magazine?
Perfect for ages 8 - 14
Developed by experienced editors
Engaging and motivating
84% of readers become more interested in science
Get hands-on, ask science questions, and win prizes!