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Mental Rotation — spatial reasoning

💡Benefits

Based on the classic Shepard & Metzler (1971) experiment. Rotating shapes in your mind to compare them trains spatial reasoning — important for maths, geometry and engineering.

🎮How to play

Two shapes are shown. Rotate them in your mind and decide whether they are the same or mirror images.

📚Scientific sources

  1. Shepard & Metzler (1971). Mental rotation of three-dimensional objects. Science, 171(3972), 701–703. https://scholar.google.com/scholar?q=Mental+rotation+of+three-dimensional+objects+Shepard+Metzler+1971

Frequently asked questions

Yes, Mental Rotation is completely free on MentalMath. You can start playing right away, no registration needed.
Rotating a shape in your mind and matching it to the original trains spatial imagination and mental rotation. These are the foundations for geometry and technical subjects.
Because rotating a shape mentally is fairly demanding, it is best suited from around age 8. Younger children may prefer simpler spatial games first.
Yes, the game runs smoothly on phones, tablets, and computers. Comparing rotated shapes works comfortably on a touchscreen too.
About 5-10 minutes a day is enough to noticeably speed up mental rotation. A little practice every day works best.
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