A fourth study of the impact of classroom assessment practices on students and their learning in the context of the classroom was undertaken by Bangert-Drowns, Kulik, and Kulik (1991), who investigated the effects of frequent classroom testing.
A hyphen (-) is a punctuation mark used to join the separate parts of a compound word. A hyphen is a joiner. A hyphen is used to join the words of a compound adjective (e.g., five-page document), to join the words of compound noun (e.g., cooking-oil), and to join a prefix to a word (e.g., re-examine).
A hyphen (also known as a dash or minus sign) looks like this: - On most standard QWERTY-style computer keyboards, a hyphen or dash appears above the letter 'P' and to the right of the number zero. It may also appear on the keyboard's number pad as a minus sign.