Symbolic manipulation on a TI-92: New threats or hidden treasures?*
نویسندگان
چکیده
The availability of hand held devices that can undertake symbolic manipulation is a recent phenomenon, potentially of great significance for both the algebra and calculus curriculum in the secondary and lower undergraduate years. The significance to date of symbolic manipulation for mathematics is described, and parallels drawn with the significance of arithmetic skills for the primary school. It is suggested that, while symbolic manipulation is central to mathematics, many students develop only a restricted competence with the associated mathematical ideas. The Texas Instruments TI-92 is used to suggest some potential beneficial uses of technology that involves symbolic manipulation.
منابع مشابه
هور شریعتمدار، هویتی پنهان در عرصه فرش دستباف
In the field of Iranian hand-woven rugs, there are different regions with varied histories some of which are still unknown or neglected. Among these are the Shariat-madar Hur rugs which belong to the ancient region of "Eij" and not long ago, were considered as unique masterpieces of carpet-weaving in Fars province. Definitely, one of the essential investigations in the field of hand-w...
متن کاملReal-Time Fingertip Tracking and Gesture Recognition
tual reality systems depend on accurate, real-time hand and fingertip tracking for seamless integration between real objects and associated digital information. We introduce a method for discerning fingertip locations in image frames and measuring fingertips trajectories across image frames. We also propose a mechanism for combining direct manipulation and symbolic gestures based on multiple fi...
متن کاملHidden threats inducing medical errors in Tehran public hospitals
Introduction: Medical errors represent a serious public health problem and pose a threat to patient safety. This study aimed to determine the hidden threats in the incidence of medical errors at public hospitals in Tehran. Methods: In this descriptive study, the population included all process owners (12-person teams) in public hospitals of Tehran. The sample size was 396 individuals, sel...
متن کاملAll or Nothing Caching Games with Bounded Queries
We determine the value of some search games where our goal is to find all of some hidden treasures using queries of bounded size. The answer to a query is either empty, in which case we lose, or a location, which contains a treasure. We prove that if we need to find d treasures at n possible locations with queries of size at most k, then our chance of winning is k d (nd) if each treasure is at ...
متن کاملAnalysis of network dynamics including hidden variables by symbolic-numeric approach
We propose a symbolic-numeric method for estimating the kinetic constants in a biological network including hidden variables which mean that the behaviors of corresponding molecules cannot be directly measured. In the present method, an algebraic manipulation of the differential equations over the Laplace domain, formulated based on the assumption of linear relationships between the variables, ...
متن کامل