Six solids
Explore cubes, rectangular prisms, triangular prisms, square pyramids, triangular pyramids and cylinders.
Free maths tool
3D solids tool
A free classroom workspace for exploring common 3D solids, matching nets and fold states.
Solid and net views
Show the solid, the net, or both side by side for class discussion.
Fold control
Use unfold, half fold, folded or the slider to connect a flat net with the solid.
Feature facts
Compare faces, edges, vertices and dimensions while students inspect each object.
What the tool does
The 3D solids tool gives teachers and students a shared model for connecting solid objects with their nets and features.
- choose from common prisms, pyramids, a cube and a cylinder
- switch between split, solid-only and net-only views
- fold or unfold the matching net
- turn labels on or off for faces and net regions
- rotate the solid manually or use auto-spin
- adjust length, width, height, radius or cylinder segments where relevant
How teachers use it
Open it on a classroom display when students need to see how a 3D object, its net and its features fit together.
- start with a cube and fold the net while students name the faces
- compare a rectangular prism with a triangular prism
- switch from a prism to a pyramid and discuss what changes
- turn labels off and ask students to identify faces, edges and vertices
- adjust dimensions to show that the object name can stay the same
Why it is useful
Nets and 3D solids are easier to reason about when students can see the flat layout and the solid model together.
- supports vocabulary for faces, edges and vertices
- connects nets with foldable 3D objects
- works as a model before independent 3D objects and nets practice
Frequently Asked Questions
Is the 3D solids tool free?
Yes. Teachers, students and families can open the 3D solids tool in a browser for free.
Which solids are included?
The tool includes cube, rectangular prism, triangular prism, square pyramid, triangular pyramid and cylinder models.
Does it show nets?
Yes. The tool can show matching nets and use fold controls to connect the flat net with the solid.
Can students change the dimensions?
Yes. Students can adjust dimensions such as length, width and height, and cylinder radius or segments where relevant.