Tiered Assessment: Supporting and Challenging Students While Utilizing Skills-Based Grading

Creating a classroom that supports each student individually as well as the class as a whole has become increasingly difficult in recent years. Through tiered assessment, educators have the opportunity to alter assessments to further challenge or support students. Another implementation in many schools nationwide is standards-based grading (SBG). In SBG, students are assessed on each learning objective separately, meaning for each skill included on an assessment, students will receive an individual score. When tiered assessment is implemented alongside SBG, students have the unique opportunity to be assessed on each learning objective separately and to assess a skill based on their readiness, interest, and learning profile. During student teaching in a school that has implemented SBG, I administered tiered assessment in the Spanish classroom by providing scaffolds for struggling students in order to better target the specific learning objectives assessed in a particular assessment. This self-study includes a qualitative analysis of data (ie. field notes, lesson plans, assessment records, student work samples) and a review of current research. Understanding differentiation and the basics of tiered assessments is essential to this self study, as this topic in particular does not have an abundance of research

Multimode Hong-Ou-Mandel interference

We consider multimode two-photon interference at a beam splitter by photons created by spontaneous parametric down-conversion. The resulting interference pattern is shown to depend upon the transverse spatial symmetry of the pump beam. In an experiment, we employ the first-order Hermite-Gaussian modes in order to show that, by manipulating the pump beam, one can control the resulting two-photon interference behavior. We expect these results to play an important role in the engineering of quantum states of light for use in quantum information processing and quantum imaging.Comment: 4 pages, 6 figures, submitted to PR

Laguerre-Gauss beam generation in IR and UV by subwavelength surface-relief gratings

The angular momentum of light can be described by the states of spin angular momentum, associated with polarization, and orbital angular momentum, related to the helical structure of the wave front. Laguerre-Gaussian beams carry orbital angular momentum and their generation can be done by using an optical device known as q-plate. However, due to the usage of liquid crystals, these components may be restricted to operate in specific wavelengths and low power sources. Here we present the fabrication and characterization of q-plates made without liquid crystals, using processes of e-beam lithography, atomic layer depositions and dry etch techniques. We exploit the phenomenon of form birefringence to give rise to the spin-to-orbital angular momentum conversion. We demonstrate that these plates can generate beams with high quality for the UV and IR range, allowing them to interact with high power laser sources or inside laser cavities.Comment: 10 pages, 11 figure

Control of conditional pattern with polarization entanglement

Conditional interference patterns can be obtained with twin photons from spontaneous parametric down-conversion and the phase of the pattern can be controlled by the relative transverse position of the signal and idler detectors. Using a configuration that produces entangled photons in both polarization and transverse momentum we report on the control of the conditional patterns by acting on the polarization degree of freedom.Comment: Submitted for publication in Optics Communication

Health surveillance and geography: Theoretical and methodological potential

Objectives: To contribute to constructing recognition methodologies in the field by means of secondary data on objects and their forms, namely conditions of action and means of existence of human endeavor; to contribute to health surveillance through the incorporation of particular geographic characteristics; to relate concepts and categories of the territorialization process of health surveillance practices

Quantum Erasure by Transverse Indistinguishability

We show that the first experiment with double-slits and twin photons detected in coincidence can be understood as a quantum eraser. The ``which path'' information is erased by transverse indistinguishability obtained by means of mode filtering in the twin conjugated beam. A delayed choice quantum eraser based on the same scheme is proposed.Comment: Submitted for publication in Optics Communication