scholarly journals Response to Fuson, Clements, and Sarama Commentary on Litkowski, Duncan, Logan, and Purpura (2020)

AERA Open ◽  
2021 ◽  
Vol 7 ◽  
pp. 233285842110271
Author(s):  
David J. Purpura ◽  
Ellen C. Litkowski ◽  
Robert J. Duncan ◽  
Jessica A. R. Logan
Keyword(s):  
Young Children ◽  
Grade Level ◽  
High Quality ◽  
Equity Issues ◽  
Quality Instruction ◽  
New Evidence ◽  
Over Time

In response to Fuson et al.’s commentary on Litkowski et al. (2020), we clarify and expand on three areas: (1) the need for prekindergarten standards, (2) the value in developmental survey work, and (3) the importance of understanding curriculum translation and uptake. Specifically, we note that standards need to be appropriate for grade-level and it is time for more aligned prekindergarten standards. Developmental survey work is critical for ensuring that standards and expectations are accurate and adjusted to meet current needs and can be used address equity issues in instruction. Furthermore, we agree that intervention and curriculum work are needed, but there should be explicit emphasis on enhancing uptake and use of high-quality instruction. Ultimately, we need a system of assessment and instruction that is continually updated and improved, that integrates and modifies new evidence over time to ensure that we are striving for—and attaining—the best results for young children.

Coding Is Lit: Integrating Coding and Literacy in Early Childhood Inclusive Settings

2021 ◽  
pp. 004005992110101
Author(s):  
Nicole S. Fenty ◽  
Abby Pierce ◽  
Julia Schildwachter
Keyword(s):  
Early Childhood ◽  
Critical Thinking ◽  
Young Children ◽  
21St Century ◽  
Grade Level ◽  
Literacy Skills ◽  
Inclusive Settings ◽  
Hands On ◽  
Common Grade ◽  
To Receive

There has been an increased emphasis in recent years on supporting young children with building 21st century literacy skills such as critical thinking and collaboration. Unfortunately, young children with or at risk for disabilities are unlikely to receive access to experiences that build 21st century literacies. Pre-coding activities, which include hands-on coding games and stories appropriate for young children, are one way to provide access to this population of students. The purpose of this article is to provide details about how educators in early childhood inclusive settings may integrate pre-coding activities with everyday routines and procedures as well as with common grade level appropriate read alouds. Fundamentals of pre-coding are provided along with guidelines for planning and instruction.

scholarly journals The fossil record of whip spiders: the past of Amblypygi

PalZ ◽  
2021 ◽  
Author(s):  
Carolin Haug ◽  
Joachim T. Haug
Keyword(s):  
Fossil Record ◽  
3D Imaging ◽  
Three Dimensional ◽  
Dorsal Shield ◽  
Stereo Images ◽  
Geological Time ◽  
High Quality ◽  
The Past ◽  
Over Time

AbstractWhip spiders (Amblypygi), as their name suggests, resemble spiders (Araneae) in some aspects, but differ from them by their heart-shaped (prosomal) dorsal shield, their prominent grasping pedipalps, and their subsequent elongate pair of feeler appendages. The oldest possible occurrences of whip spiders, represented by cuticle fragments, date back to the Devonian (c. 385 mya), but (almost) complete fossils are known from the Carboniferous (c. 300 mya) onwards. The fossils include specimens preserved on slabs or in nodules (Carboniferous, Cretaceous) as well as specimens preserved in amber (Cretaceous, Eocene, Miocene). We review here all fossil whip spider specimens, figure most of them as interpretative drawings or with high-quality photographs including 3D imaging (stereo images) to make the three-dimensional relief of the specimens visible. Furthermore, we amend the list by two new specimens (resulting in 37 in total). The fossil specimens as well as modern whip spiders were measured to analyse possible changes in morphology over time. In general, the shield appears to have become relatively broader and the pedipalps and walking appendages have become more elongate over geological time. The morphological details are discussed in an evolutionary framework and in comparison with results from earlier studies.

scholarly journals Dynamic Signaling with Dropout Risk

2016 ◽  
Vol 8 (1) ◽  
pp. 57-82 ◽  
Author(s):  
Francesc Dilmé ◽  
Fei Li
Keyword(s):  
Time Varying ◽  
High Quality ◽  
Indivisible Good ◽  
Initial Belief ◽  
Costly Delay ◽  
Over Time

We study the role of dropout risk in dynamic signaling. A seller privately knows the quality of an indivisible good and decides when to trade. In each period, he may draw a dropout shock that forces him to trade immediately. To avoid costly delay, the seller with a low-quality good voluntarily pools with early dropouts, implying that the expected quality of the good increases over time. We characterize the time-varying equilibrium trading dynamics. It is demonstrated that the maximum equilibrium delay of trade is decreasing in the initial belief that the good is of high quality. (JEL C73, D82, D83)

Sex Differences in Rotary Pursuit Performance of Young Children: A Follow-up

1968 ◽  
Vol 26 (3_suppl) ◽  
pp. 1199-1202 ◽  
Author(s):  
Stephen H. Davol ◽  
Susan L. Breakell
Keyword(s):  
Sex Differences ◽  
Middle Class ◽  
Young Children ◽  
Grade Level ◽  
Rest Period ◽  
Lower Class ◽  
Rotary Pursuit

A 30-rpm or a 45-rpm rotary pursuit task was given to 72 boys and 72 girls from Grades 1 to 5 of a lower-class and a middle-class school; each S was given 5 125-sec. trials with a 1-min. rest period between trials. Analyses of time-on-target showed a different pattern of results for each school. No significant sex differences were found except through interaction with sex of E. Level of performance was determined primarily by speed of rotation and grade level of S, but there was a lag in performance of Ss from the first two grades of the lower-class school.

scholarly journals Supporting the development of scientific understanding when constructing an evolving explanation

2022 ◽  
Vol 4 (1) ◽  
Author(s):  
Ann M. Novak ◽  
David F. Treagust
Keyword(s):  
Scientific Explanation ◽  
Project Based Learning ◽  
Incremental Development ◽  
Freshwater Organisms ◽  
Freshwater System ◽  
New Evidence ◽  
Scientific Ideas ◽  
Over Time

AbstractWe explore how students developed an integrated understanding of scientific ideas and how they applied their understandings in new situations. We examine the incremental development of 7th grade students’ scientific ideas across four iterations of a scientific explanation related to a freshwater system. We demonstrate that knowing how to make use of scientific ideas to explain phenomena needs to be learned just as developing integrated understanding of scientific ideas needs to be learned. Students participated in an open-ended, long-term project-based learning unit, constructing one explanation over time to address, “How healthy is our stream for freshwater organisms and how do our actions on land potentially impact the water quality of the stream?” The explanation developed over several weeks as new data were collected and analyzed. Students discussed evidence by revisiting scientific ideas and including new scientific ideas. This research investigates two questions: (1) As students engage in writing a scientific explanation over time, to what extent do they develop integrated understanding of appropriate scientific ideas? and (2) When writing about new evidence, do these earlier experiences of writing explanations enable students to make use of new scientific ideas in more sophisticated ways? In other words, do earlier experiences allow students to know how to make use of their ideas in these new situations? The results indicated statistically significant effects. Through various iterations of the explanation students included richer discussion using appropriate scientific ideas. Students were also able to make better use of new knowledge in new situations.

scholarly journals The role of tourism awareness in developing accessible tourism

2020 ◽  
pp. 437-463
Author(s):  
طه مهدي محمود ◽  
حسين محمد علي أسد
Keyword(s):  
Young Children ◽  
Pregnant Women ◽  
Special Needs ◽  
The Elderly ◽  
Tourism Industry ◽  
Negative Effects ◽  
High Quality ◽  
Tourism Sector ◽  
Effective Contribution

Tourism awareness is one of the most important pillars that contribute to the development of the tourism industry in general, and the development of various tourism patterns in particular, and among those patterns are accessible tourism, because of its great importance in reducing the negative effects that may accompany the tourism industry by building educated tourism employees And be aware, knowledgeable and aware of the importance of the accomplishments and successes achieved by the tourism sector and the opportunities that this sector offers and economic opportunities that ultimately reflect on the members of society and the country. Perhaps the sensitivity of dealing with the categories of accessible tourism (those with special needs, the elderly, pregnant women, mothers for young children) need special type employees who possess a set of special skills and experiences in dealing with those groups to make the details of the tourist trip for the concerned individuals, the most important of which is accommodation (the hotel). And to achieve the best possibility to enjoy the tourist activity in general. This research aims to highlight on the role of tourism awareness for a sample of employees of the holy Karbala hotels and their effective contribution to achieve the development of soft tourism by providing high-quality services that reassure the targeted tourists and thus contribute to attract the largest number of them, which is greatly reflected in the development of tourism and making years Coming golden years for this tourist pattern, which is considered an ethical and human duty to care about and develop.

scholarly journals 383. Feasibility of Specimen Self-collection in Young Children Undergoing SARS-CoV-2 Surveillance for In-person Learning

2021 ◽  
Vol 8 (Supplement_1) ◽  
pp. S293-S293
Author(s):  
Jonathan Altamirano ◽  
Grace Tam ◽  
Marcela Lopez ◽  
India Robinson ◽  
Leanne Chun ◽  
...  
Keyword(s):  
Young Children ◽  
Time Window ◽  
School Administrators ◽  
Error Rates ◽  
Independent Observer ◽  
Specimen Collection ◽  
Timing Data ◽  
Short Time Window ◽  
Short Time ◽  
Over Time

Abstract Background While pediatric cases of COVID-19 are at low risk for adverse events, schoolchildren should be considered for surveillance as they can become infected at school and serve as sources of household or community transmission. Our team assessed the feasibility of young children self-collecting SARS-CoV-2 samples for surveillance testing in an educational setting. Methods Students at a K-8 school were tested weekly for SARS-CoV-2 from September 2020 - June 2021. Error rates were collected from September 2020 - January 2021. Clinical staff provided all students with instructions for anterior nares specimen self-collection and then observed them to ensure proper technique. Instructions included holding the sterile swab while making sure not to touch the tip, inserting the swab into their nostril until they start to feel resistance, and rubbing the swab in four circles before repeating the process in their other nostril. An independent observer timed random sample self-collections from April - June 2021. Results 2,590 samples were collected from 209 students during the study period when data on error rates were collected. Errors occurred in 3.3% of all student encounters (n=87). Error rates over time are shown in Figure 1, with the highest rate occurring on the first day of testing (n=20/197, 10.2%) and the lowest in January 2021 (n=1/202, 0.5%). 2,574 visits for sample self-collection occurred during the study period when independent timing data was collected (April - June 2021). Of those visits, 7.5% (n=193) were timed. The average duration of each visit was 70 seconds. Figure 1. Swab Error Rates Over Time Conclusion Pediatric self-collected lower nasal swabs are a viable and easily tolerated specimen collection method for SARS-CoV-2 surveillance in school settings, as evidenced by the low error rate and short time window of sample self-collection during testing. School administrators should expect errors to drop quickly after implementing testing. Disclosures All Authors: No reported disclosures

scholarly journals Early Development of Locomotor Patterns and Motor Control in Very Young Children at High Risk of Cerebral Palsy, a Longitudinal Case Series

2021 ◽  
Vol 15 ◽  
Author(s):  
Annike Bekius ◽  
Margit M. Bach ◽  
Laura A. van de Pol ◽  
Jaap Harlaar ◽  
Andreas Daffertshofer ◽  
...  
Keyword(s):  
Cerebral Palsy ◽  
High Risk ◽  
Young Children ◽  
Early Development ◽  
Muscle Activation ◽  
Brain Lesions ◽  
Very Young Children ◽  
Gait Parameters ◽  
Locomotor Patterns ◽  
Over Time

The first years of life might be critical for encouraging independent walking in children with cerebral palsy (CP). We sought to identify mechanisms that may underlie the impaired development of walking in three young children with early brain lesions, at high risk of CP, via comprehensive instrumented longitudinal assessments of locomotor patterns and muscle activation during walking. We followed three children (P1–P3) with early brain lesions, at high risk of CP, during five consecutive gait analysis sessions covering a period of 1 to 2 years, starting before the onset of independent walking, and including the session during the first independent steps. In the course of the study, P1 did not develop CP, P2 was diagnosed with unilateral and P3 with bilateral CP. We monitored the early development of locomotor patterns over time via spatiotemporal gait parameters, intersegmental coordination (estimated via principal component analysis), electromyography activity, and muscle synergies (determined from 11 bilateral muscles via nonnegative matrix factorization). P1 and P2 started to walk independently at the corrected age of 14 and 22 months, respectively. In both of them, spatiotemporal gait parameters, intersegmental coordination, muscle activation patterns, and muscle synergy structure changed from supported to independent walking, although to a lesser extent when unilateral CP was diagnosed (P2), especially for the most affected leg. The child with bilateral CP (P3) did not develop independent walking, and all the parameters did not change over time. Our exploratory longitudinal study revealed differences in maturation of locomotor patterns between children with divergent developmental trajectories. We succeeded in identifying mechanisms that may underlie impaired walking development in very young children at high risk of CP. When verified in larger sample sizes, our approach may be considered a means to improve prognosis and to pinpoint possible targets for early intervention.

scholarly journals The genomic variation landscape of globally-circulating clades of SARS-CoV-2 defines a genetic barcoding scheme

2020 ◽  
Author(s):  
Qingtian Guan ◽  
Mukhtar Sadykov ◽  
Raushan Nugmanova ◽  
Michael J. Carr ◽  
Stefan T. Arold ◽  
...  
Keyword(s):  
Viral Proteins ◽  
Genomic Variation ◽  
Genome Replication ◽  
High Quality ◽  
Dynamic Changes ◽  
Health Measures ◽  
Complete Genomes ◽  
Major Mutation ◽  
Genetic Barcoding ◽  
Over Time

ABSTRACTWe describe fifteen major mutation events from 2,058 high-quality SARS-CoV-2 genomes deposited up to March 31st, 2020. These events define five major clades (G, I, S, D and V) of globally-circulating viral populations, representing 85.7% of all sequenced cases, which we can identify using a 10 nucleotide genetic classifier or barcode. We applied this barcode to 4,000 additional genomes deposited between March 31st and April 15th and classified successfully 95.6% of the clades demonstrating the utility of this approach. An analysis of amino acid variation in SARS-CoV-2 ORFs provided evidence of substitution events in the viral proteins involved in both host-entry and genome replication. The systematic monitoring of dynamic changes in the SARS-CoV-2 genomes of circulating virus populations over time can guide therapeutic and prophylactic strategies to manage and contain the virus and, also, with available efficacious antivirals and vaccines, aid in the monitoring of circulating genetic diversity as we proceed towards elimination of the agent. The barcode will add the necessary genetic resolution to facilitate tracking and monitoring of infection clusters to distinguish imported and indigenous cases and thereby aid public health measures seeking to interrupt transmission chains without the requirement for real-time complete genomes sequencing.

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