Cell Phone Usage in Secondary Schools: A Pervasive Post-Pandemic Problem

Within schools across the country, cell phone usage has been and continues to be a pervasive problem. While this issue has been noted as far back as the advent of cell phones, there seems as of late to be a troubling trend of excessive cell phone usage within class. Since the Covid-19 pandemic relegated students to learning digitally within their homes, students returning to physical classrooms are struggling with re-learning what it looks like to be a member of a functioning learning environment. The issue most glaringly represented and difficult to address is phone usage within the classroom. Time spent on phones in the classroom routinely detracts from the time students are able to spend learning and. They have also been proven to be detrimental to student attention, scholastic achievement, and information retention. Successfully addressing this problem has shown to significantly improve exam scores, especially in lower-performing students. Therefore, successfully addressing student phone usage can be an effective strategy to address some educational inequalities. As a result, teachers across the country are making an effort to find a solution to the problem. This study examines one potential solution and analyzes its efficacy in a secondary English classroom

Interactions Between Pentachlorophenol Solutions and Wood. I. Effects of Time and Temperature on Deposition Within Cell Walls

The amount of cell-wall pentachlorophenol (PCP) did not vary significantly up to 6 months after treatment when Douglas-fir sapwood and heartwood stakes were stored at 6 or 12% moisture content and at temperatures ranging up to 150 F. Total PCP was greater for earlywood than for latewood, but the per cent PCP deposited in the cell wall was similar for both wood zones

Comparison of Methods for Preparation of Moisture Content Gradient Sections

A comparison is made of the effect of sawing and slicing on the moisture content of wood sections used to assess moisture content gradients in lumber. Thin, small-diameter (0.020 inch x 2.75 inch and 0.031 inch x 4.00 inch) (0.508 mm x 6.98 cm and 0.794 x 10.2 cm), commercially available metal slitting saws and a modified commerical horizontal wood slicer were used to cut sections ranging in nominal thickness from 1/32 inch (0.79 mm) to 7/32 inch (5.56 mm) from air-dry Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) and tanoak (Lithocarpus densiflorus (Hook. & Arn.) Rehd.). In both species, moisture content loss in cut sections increased with decreasing section thickness for both slicing and sawing. Above 3/32 inch (2.38 mm) section thickness, the larger diameter saw produced moisture content losses that were less than or equal to losses in sliced sections

The Uniformity Factor-a Proposed Method for Expressing Variations in Specific Gravity

Existing measures of uniformity of specific gravity, as obtained by X-ray densitometry, are examined in light of how well they fulfill the requirements thought to be necessary for a uniformity indicator. Based upon an examination of mass and volume specific gravity distributions, a new indicator is proposed. This indicator, the uniformity factor, relates the volume distribution of specific gravity within an increment of wood to a selected reference base. The suitability of the uniformity factor for estimating wood uniformity is shown using data from two species of different uniformities. This approach appears to have potential as a new tool in predicting wood quality

Enhancing Mathematical Graphical Displays in Excel through Animation

Enhancing Mathematical Graphical Displays in Excel through AnimationThe use of spreadsheets in teaching mathematics has increased significantly in recent years. One can implement mathematical algorithms, models, visualizations, and applications naturally and effectively through interactive spreadsheet constructions and creative graphical displays. This paper demonstrates techniques that enable educators to design animated graphical displays in their spreadsheet constructions in order to produce powerful classroom demonstrations to enhance mathematical understanding, while also presenting students with new ideas for incorporating attractive visual components in their mathematical assignments and projects