2D shapes are flat, plane shapes. Triangles have three sides and three angles that add up to 180°. Quadrilaterals have four sides and four angles that add up to 360°. Constructing triangles Learn how ...

Learning got hands-on and a little sticky in Mrs. Freilinger’s 1st grade class at Higgins Elementary as students explored 3D shapes using an engaging STEM activity involving toothpicks and ...

A prism is a 3D shape which has a constant cross section - both ends of the solid are the same shape and anywhere you cut parallel to these ends will give you the same shape. For example, in the prism ...

Shapes are great fun. We see them everywhere! See if you can spot shapes in the objects around you. Can you see any 2-D shapes such as squares, rectangles, triangles, circles, semicircles, ovals? For ...