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E側 側ionfurSpecial国 dSti略的t:ma加 &fieild. In1D使間伐ona1Edu明tionCoope四:tion Charl邸 KojoMenyah Introd1l1dionA new cumculum was introduced inGhana
in2007 atthe basicschools由atcontain challenging topicsfort1he teacherstoteach
，
let a!one :10 deveiop teachingand 1崎 町ing materials(TLMs) [1，
2].τ'hetwomost chaUのngingtopicsare Bask:E1ectronicsand ChemicaI Compounds.Thisisbecause 説udenぽ textbooksand teachers' manuals suggestsome activitieswith.out suggesting any materials and is hard tomake lessons srudenト oontered..百1isresearch isto develop tools i政 basicelectronicsand buildr<ID.g chemical mod.els Ulsing locallyavailable materia.ls tofaciH阻te hands-
o
n activitiesatms
science in Ghana and o由el'A創 侃ncoun釘iesth窓生mightlack TLMs. Inordertofind outthe extentof which these topicsare challenging tothe JHS science teachers. a survey was conductedby using questionnaire and intelvieVfs to confirm由e realities on the ground， .ie. teachers'situation on the new curriculum出 farasdevelopmentof TLMs are concemed. Followingthe results in(Fig.l). some TLMsaredeγelopedfor“
Basic Electrmせcs円 and“Chemical Compounds" in the pres:ent study. Q U F b q u Supervisor:計ofessorKiyoshiTAKEDA Q，. A B C D を Fig.l Percen蝕ge(P) distributionof responses totopics由ataredifficultto deveiop TLMs. A: Acids，
bases and 悶ltsoB:Chemical Comp0l現1ds C:BasicElectronics，
D: Electrical En町田，and E:OthersIl\Illprovis~tioll\ olf~olderless b!l"cadboaIrd aUld
dayey moiec[ilar models
Solderlessbreadboard was deve!oped
using copper foiland package box thatis readily ava
i
1
able lin the Ghanaian envIron..ment.Figures 2 and 3 areconstmcted solderless
breadboardandelectroniccomponentsthat have been in田rtedinthe developedsolderless breadboard respectiveily. The breadboard wiH部sistthe蜘 del1ts toset up and change easilythe arrangementof various circuits appearinginthe new JHS textbookswithout soldering.
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