The adjective SUBJECTIVE has 2 senses: 1. taking place within the mind and modified by individual bias. 2. of a mental act performed entirely within the mind. Familiarity information: SUBJECTIVE used as an adjective is rare.
Unsourced material may be challenged and removed. (July 2014) (Learn how and when to remove this template message) A kneeboard is a board ridden in a kneeling stance. Kneeboards are ridden in ocean surf, or while being towed behind a boat on a lake or river.
(April 2008). A quadruple blackboard at the Helsinki University of Technology. A blackboard (UK English) or chalkboard (US English; also blackboard) is a reusable writing surface on which text or drawings are made with sticks of calcium sulfate or calcium carbonate, known, when used for this purpose, as chalk.ticks of processed chalk are produced especially for use with blackboards in white and also in various colours. These are often made not from chalk rock but from calcium sulfate in its dihydrate form, CaSO 4 Â·2H 2 O (gypsum). Chalk sticks containing calcium carbonate typically contain 40-60% of CaCO 3 (calcite).