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Sulfonated poly(ether ketone)s containing 3,5-dimethyl phthalazinone moieties (SPPEK-DMs) with different degrees of sulfonation (DS) were synthesized via direct polycondensation from 4-(3,5-dimethyl-4-hydroxyphenyl)-2,3-phthalazinone, 4,4′-difluorobenzophenone and 3,3′-disulfonate-4,4′-difluorobenzophenone. The chemical structure of SPPEK-DMs was characterized by FTIR and 1 H-NMR. Thermal stability of SPPEK-DMs was characterized by the thermogravimetric analysis. The membranes prepared from SPPEK-DMs exhibited ion exchange capacities (IEC) ranging from 0.93 mmol·g −1 to 1.86 mmol·g −1 . Water uptake, swelling, oxidative stability and methanol permeability of SPPEKDMs membranes were investigated. SPPEK-DMs membranes exhibited high oxidative stability. The methanol permeability values of SPPEK-DMs membranes were in the range 5.15 × 10 −8 −6.61 × 10 −7 cm 2 ·s −1 , which was much lower than those of Nafion117. The proton conductivity of SPPEK-DM40 membranes was 1.1 × 10 −2 S·cm −1 at 70°C.

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The Multi-Mouse Quiz System is an application used to treat quizzes in a classroom or other learning environment. The system comprises the Multi Mouse Quiz (MMQ) and MMQEditor. The MMQ is an application of Single Display Groupware (SDG), which enables multiple users to answer quizzes by connecting several mice to an ordinary computer. The MMQEditor is a personal computers (PCs) application designed to edit quizzes for MMQ. In this paper, the authors describe the activities of using MMQ and MMQEditor in an elementary school. Sixth grade children were asked to design quizzes using MMQEditor and then evaluate them mutually using MMQ. The results of the activities showed that the combination of MMQEditor and MMQ helped engage the children in the activities, the children easily operated MMQEditor, and learning was encouraged and deepened through the mutual evaluation of created quizzes.