Vocabulary consisting only from characters you are able to read
電卓
でんたく
(abbr) calculator (electronic)denki
手がかり
てがかり
(1)clue, key, trail, scent, track, contact, (2)handhold, on hand mix
貝
かい
(1)(uk) Japanese babylon (species of shelled mollusk, Babylonia japonica), Japanese ivory shell, (2)(abbr) spinning top (traditionally made from a Japanese babylon shell)
取り組む
とりくむ
to tackle/to wrestle with/to engage in a bout/to come to grips with/to make effort/to strive for/to deal with/(P)godan, leda1, verb, vintrans
半紙
はんし
Japanese writing paper used for calligraphymix