Abstract: A case for multiple stamp pads is provided. One embodiment of the case includes a first housing portion for retaining a first stamp pad, a second housing portion for retaining a second stamp pad, a hinge connecting the first and second housing portions for movement between a closed configuration where the first and second stamp pads are facing each other and sealed within the first and second housing portions and an open configuration where the first and second stamp pads are exposed for use, and a divider separating the first and second stamp pads in the closed configuration and swingably covering one of the first and second stamp pads in the open configuration.

Abstract: A covered money holding tray with a series of toy money holding compartments and a cavity for receiving a book such that when the cover is closed with the book in place, the compartments are closed off, preventing the contents of the open compartments from spilling out should the tray be moved about, with the cover in a preferred embodiment being clear or translucent so that the cover or back of the book can be read when the cover is closed.

Abstract: A drawing tool comprising a protractor portion at one end and an elongated radius arm portion extending therefrom, with a pivot disc rotatably mounted in the tool, and an adjustable radius indicator slideably mounted in the radius arm portion, the pivot disc having an open circular pivot point and the adjustable radius indicator having means for automatically resisting unintended indicator movement.

Abstract: A plastic encased hexagonal shaped metal weight made from steel rod is provided with engagement regions at its ends capable of engaging the ends of other such weights, so as to enable nested, engaged stacking of two or more of such weights. The weights can be color coded as to their weight.

Abstract: A plastic encased hexagonal shaped metal weight made from steel rod is provided with engagement regions at its ends capable of engaging the ends of other such weights, so as to enable nested, engaged stacking of two or more of such weights. The weights can be color coded as to their weight.

Abstract: A drawing tool comprising a protractor portion at one end and an elongated radius arm portion extending therefrom, with a pivot disc rotatably mounted in the tool, and an adjustable radius indicator slideably mounted in the radius arm portion, the pivot disc having an open circular pivot point and the adjustable radius indicator having means for automatically resisting unintended indicator movement.

Abstract: A method and apparatus of teaching mathematical problem solving includes using a series of containers, each consisting of an inherent problem requiring the use of mathematical skills for solution. The series of containers meets all conditions for the teaching of mathematics as recommended by the National Council of Teachers of Mathematics in their 1989 document "The Standards". The complete solution satisfying "The Standards" for each container ordinarily takes a period of days. A kit consisting of such containers is disclosed.

Abstract: A device for forming circles that includes a first member which is rotatably attached to a second member. The first and second members include a first peripheral section and a second peripheral section, with one of the sections being arcuate. The first peripheral section of the first member is generally opposite the second peripheral section of the second member and the first peripheral section of the second member is generally opposite the second peripheral section of the first member. In one embodiment, the first peripheral section is arcuately curved and the second peripheral section is tapered. In another embodiment, the first peripheral section is arcuately curved and tapered and the second peripheral section is generally flat. Marking means are removably secured between the opposing sections of the first and second members.

Abstract: A device for forming circles on a drawing surface that includes, in part, a first rotatable member and a second rotatable member. The first rotatable member is substantially flat and includes an opening formed therein. The second rotatable member is resiliently disposed within the opening. A first means elevates the first rotatable member above the drawing surface to prevent smearing of lines on the surface. A second means elevates the second rotatable member above the drawing surface to prevent smearing of lines on the surface and to engage the surface for stabilizing the rotatable member over the surface. The second mechanism elevates the second rotatable member to approximately the same level as the first rotatable member. A plurality of holes are disposed in the first and second rotatable members. The holes accommodate a marking instrument used for forming the circles.