
▷ 15 sec video
Mathematics & geometry
Elliptical Trammel Exhibit
Move a linked handle while two sliders follow perpendicular tracks and guide a point around an ellipse.
Catalogue rendering · Design-image sequence
Continue browsing catalogue designs and physical exhibit references. Open a product for its activity, available media and project details.
649–672 of 717 exhibits
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▷ 15 sec video
Mathematics & geometry
Move a linked handle while two sliders follow perpendicular tracks and guide a point around an ellipse.
Catalogue rendering · Design-image sequence

▷ 15 sec video
Mathematics & geometry
A camera and screen compare an original face image with images constructed from its left and right halves.
Catalogue rendering · Design-image sequence

▷ 15 sec video
Mathematics & geometry
Start a protected layered petal model and observe its changing appearance during the demonstration.
Catalogue rendering · Design-image sequence

▷ 15 sec video
Mathematics & geometry
Present a formula card to the reader and explore the corresponding three-dimensional graphic on the screen.
Catalogue rendering · Design-image sequence

▷ 15 sec video
Mathematics & geometry
Turn the crank and compare the rotation of a gear, a surrounding ring and their moving reference points.
Catalogue rendering · Design-image sequence

▷ 15 sec video
Mathematics & geometry
Compare coloured geometric pieces and a transparent cube to explore how solid shapes can fit together.
Catalogue rendering · Design-image sequence

▷ 15 sec video
Mathematics & geometry
Adjust a division point on a screen and compare your chosen proportions with a golden-ratio reference.
Catalogue rendering · Design-image sequence

▷ 15 sec video
Mathematics & geometry
Compare routes between the same locations on a globe and a flat map using the supplied string guides.
Catalogue rendering · Design-image sequence

▷ 15 sec video
Mathematics & geometry
Study a rising spiral surface represented by straight strings between its supports.
Catalogue rendering · Design-image sequence

▷ 15 sec video
Mathematics & geometry
Adjust the indicated guide in a curved optical arrangement and compare the resulting path with the two focal reference positions.
Catalogue rendering · Design-image sequence

▷ 15 sec video
Mathematics & geometry
Rotate an inclined straight rod and observe how it passes through curved slots in a transparent panel.
Catalogue rendering · Design-image sequence

▷ 15 sec video
Mathematics & geometry
Turn a crank to follow points on small gears rolling inside a larger ring and compare the resulting paths.
Catalogue rendering · Design-image sequence

▷ 15 sec video
Mathematics & geometry
Follow the surface of a bottle-shaped topology model and consider how a continuous surface can have unusual orientation.
Catalogue rendering · Design-image sequence

▷ 15 sec video
Mathematics & geometry
Press linked buttons to change a group of lights and work out a sequence that reaches the target pattern.
Catalogue rendering · Design-image sequence

▷ 15 sec video
Mathematics & geometry
Rotate a transparent cone model and compare the liquid boundary with the marked conic-section references.
Catalogue rendering · Design-image sequence

▷ 15 sec video
Mathematics & geometry
Set a suspended platform in motion and observe the pattern produced by combined motions in two directions.
Catalogue rendering · Design-image sequence

▷ 15 sec video
Mathematics & geometry
Use switches and light outputs to compare AND, OR and NOT logic operations.
Catalogue rendering · Design-image sequence

▷ 15 sec video
Mathematics & geometry
Use illustrated questions and response buttons to explore a selectable set of reasoning challenges.
Catalogue rendering · Design-image sequence

▷ 15 sec video
Mathematics & geometry
Spin six symbol wheels and compare which shapes align in a common row when they stop.
Catalogue rendering · Design-image sequence

▷ 15 sec video
Mathematics & geometry
Turn a handwheel to move an inclined panel and watch a reflected cube image appear to change size.
Catalogue rendering · Design-image sequence

▷ 15 sec video
Mathematics & geometry
Insert an illustrated panel into a mirror box and observe a pattern repeated through successive reflections.
Catalogue rendering · Design-image sequence

▷ 15 sec video
Mathematics & geometry
Place geometric pieces into a mirror assembly to create reflected three-dimensional patterns.
Catalogue rendering · Design-image sequence

▷ 15 sec video
Mathematics & geometry
Push a small vehicle around a twisted loop and follow how its position changes before returning to the start.
Catalogue rendering · Design-image sequence

▷ 15 sec video
Mathematics & geometry
Choose a door, let a second participant reveal a known empty alternative, and compare staying with switching across repeated trials.
Catalogue rendering · Design-image sequence
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