Montessori 4-part cards (full card, picture card, label card, definition label) for types of quadrilaterals (rectangle, square, rhombus, parallelogram, trapezoid, and quadrilateral). Also covers the concept of perpendicular and parallel lines.
The definition card does not use the word in the definition allowing for readers to match them. Use without the definition in a primary class or with the definition in an elementary class.
Perfect companion to Montessori Constructive Triangle work.