Geometry
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Approximating pi with polygons
See how Pi can be visualised by drawing both an inscribed polygon and a circumscribed polygon.
Area of a Circle - GeoGebra
Dynamic demonstration. Dissect a circle and rearrange sectors into a rectangle to bridge circular and linear area.
Circle Theorems Explorer
Explore all 8 circle theorems dynamically. Drag points, reveal construction lines, and switch between numerical and algebraic angle displays.
Cross Sections of Solids (GeoGebra)
Slice 3D solids with 2D planes to reveal hidden polygons. Master spatial reasoning from cubes to conic sections.
Geoboard (Mr Barton)
A dynamic digital pegboard for exploring shape properties, Pick’s Theorem, and coordinate geometry across multiple grids.
Grid Explorer
A 3×3 challenge grid exploring perimeter & area, LCM & HCF, mean & range, and factors. Find examples that are more, same, or less.
Logo Environment
A modern web app version of the Logo environment, optimised for classroom use.
Nets of Solids (GeoGebra)
Animate the unfolding of 3D solids and derive surface area formulae through interactive folding.
Polygon Angles Explorer
Dynamic geometry for KS3/4. Drag vertices to explore interior/exterior angle sums in regular and concave polygons.
Quadrilateral Explorer
Explore the properties of quadrilaterals and the hierarchy of their types.
Reflection Lab
Interactive 3D mirror for exploring reflection. Drop in a PDF question and model the transformation live.
Trimension - 3D Geometry
Bridge 3D geometry and 2D analysis. Build composite solids and instantly extract internal planes for closer inspection.
Vectorama
Dynamic 2D/3D vector space. Visualise matrix transformations, eigenspaces, and complex geometric intersections.