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CodeHS is an interactive online learning platform offering computer science and programming instruction for schools and individual learners. CodeHS is focused on spreading access to and knowledge of computer science by offering online instructional materials supported by remote tutors. In the introductory learning module, students on the site ...
Van Hiele model. In mathematics education, the Van Hiele model is a theory that describes how students learn geometry. The theory originated in 1957 in the doctoral dissertations of Dina van Hiele-Geldof and Pierre van Hiele (wife and husband) at Utrecht University, in the Netherlands. The Soviets did research on the theory in the 1960s and ...
Rectangle. In Euclidean plane geometry, a rectangle is a quadrilateral with four right angles. It can also be defined as: an equiangular quadrilateral, since equiangular means that all of its angles are equal (360°/4 = 90°); or a parallelogram containing a right angle. A rectangle with four sides of equal length is a square.
R-tree. R-trees are tree data structures used for spatial access methods, i.e., for indexing multi-dimensional information such as geographical coordinates, rectangles or polygons. The R-tree was proposed by Antonin Guttman in 1984 [2] and has found significant use in both theoretical and applied contexts. [3]
t. e. Technology readiness levels ( TRLs) are a method for estimating the maturity of technologies during the acquisition phase of a program. TRLs enable consistent and uniform discussions of technical maturity across different types of technology. [ 1] TRL is determined during a technology readiness assessment ( TRA) that examines program ...
By Akash Sriram (Reuters) - Uber and Chinese automaker BYD announced a multi-year partnership on Wednesday aimed at bringing 100,000 new electric vehicles to the ride-hailing platform globally.
In geometry, a golden rectangle is a rectangle whose side lengths are in the golden ratio, : +, which is : (the Greek letter phi), where is approximately 1.618. Golden rectangles exhibit a special form of self-similarity : All rectangles created by adding a square to a side, or removing a square from an end, of a golden rectangle are golden ...
Since they tied for third, Morikawa remained slightly ahead of Cantlay in the OWGR standings. That gave him the final Olympics spot. — Nosferatu (@VC606) June 16, 2024. Morikawa, who finished ...