Superimposed transparencies used in education
Supplementary teaching instruments
Teaching apparatus and method for visually representing polynomi
Teaching circumference instrument
Tetrahedron blocks capable of assembly into cubes and pyramids
Tetrahedron blocks capable of assembly into cubes and pyramids
Tetrahedron blocks capable of assembly into cubes and pyramids
Toy device for illustrating mathematics
Trigonometry visualizers and method of making same
Virtual polyhedra models
Visual aid for teaching linear relationships
Visual aid for teaching trigonometric functions
Visual aids for understanding characteristics of geometric figur