Angle construction
Angle Architect
Rotate a ray to make an angle, then solve complementary, supplementary and triangle-angle challenges.
8 missions · Foundation · Untimed
Geometry
Angles, transformations, area and perimeter.
4 activities · 26 guided missions · No account needed
Browse interactive library →Start learning →
Coordinate transformations
Transform Lab
Translate, rotate and reflect a triangle until it matches a target on the coordinate plane.
6 missions · Developing · Untimed
Tile architecture
Area Atelier
Design connected tile shapes with specified areas and perimeters. More than one solution can work.
6 missions · Foundation · Untimed
Applied reasoning
Shape Reasoning
Six applied problems with plausible alternatives and worked explanations.
6 missions · Stretch · Untimed
Practice, with a little more purpose.
Work without a countdown. Try the model, use a hint, then read the explanation. Checkpoints and practice records stay on your device. Teaching tools create shareable activity playlists and printable worksheets with answer keys.
These are original practice activities, not an accredited course or a secure assessment. Difficulty labels are editorial, not formal grade alignment. Science activities use explicitly simplified models. Playing requires JavaScript; this directory does not. See each activity's reference and model limits.