Abstract: A card-connector is provide for the construction 3-dimensions objects with cards, such as playing cards. The card connector can include a card receiving portion and an interconnection portion. The card receiving portion can be bifurcated to define a first side portion, a second side portion, and a slot. The interconnecting portion can have at least one of a ball portion or socket portion of a ball and socket joint, where two interconnecting portion can be connected to form a ball and socket joint. Multiple card connectors can be joined together with the interconnecting portions to create 3-dimensional objects with the cards.

Abstract: A compound of formula I or a pharmaceutically acceptable salt thereof in which R1 and R2 are independently H or methyl (for example N,N-dimethyl-1-[1-(4-chlorophenyl)cyclobutyl]-3-methylbutyl amine hydrochloride optionally in the form of its monohydrate) is used for treating fibromyalgia or neuropathic pain, such as pain associated with diabetes mellitus, shingles, nerve injury and varied peripheral neuropathies.

Abstract: An electronic handheld arithmetic learning aid which includes a speech synthesis device, a speaker driven by the speech synthesis device, a memory having digital data stored therein from which a plurality of mathematical problems may be derived for presentation to an operator for solution, and a controller for accessing selected portions of the digital data from the memory for input to the speech synthesizer device in presenting the mathematical problems to the operator in an audibly voiced manner via the speaker. In one aspect, at least some of the mathematical problems derivable from the memory involve respective sets of at least two individual numbers from which the operator is expected to determine a particular mathematical relation in providing a solution to the corresponding mathematical problem.