Curated OER
Free Printables: Nets (3D Models)
In this 3D shapes worksheet, students cut out the 3D shape on the page and fold on the lines to create the correct shape. The worksheet states which shape should be build with the cut-out.
Curated OER
Symmetry of the Southwest
Fourth graders examine mirror symmetry. In this symmetry instructional activity, 4th graders discover that symmetry is not always vertical or horizontal. Students cut and fold shapes along lines of symmetry.
Khan Academy
Khan Academy: Constructing Triangles
Practice constructing triangles. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.