Didactic Resources for Counting Rectangular Trapezoids

Didactic resources for counting rectangular trapezoids are presented. Examples of tasks for counting rectangular trapezoids, the made and printed 3D auxiliary models for them are given. Variants for using manipulatives made of EVA material to help mathematics education are considered. The resources are suitable for use in mathematics, information technology and computer modeling classes, when working in STEM centers. They are also useful for setting and solving the tasks under consideration by people with visual impairments.