The outdoors can offer children a rich space for learning and inspires authentic mathematical opportunities. The author describes the experiences her kindergarten students have when when they spend many hours each day, exploring their vast play yard and engaging in play-based activities typically done inside a classroom. She also chronicles the…

In total, more than 40 percent of the students in California's public schools speak a language other than English at home. In the 2016-17 school year, 21 percent (or more than 1.3 million) of all students were English Learners (ELs). When students who were formerly English Learners are added in, the population of "ever ELs" expands to 38…

Most states have developed or revised school accountability systems in response to the Every Student Succeeds Act (ESSA). While these systems include multiple indicators, to many stakeholders the outcome of central interest is the overall rating or classification produced for each school. These ratings are often used to identify schools that merit…

The "Current Term Enrollment Estimates Report Series" is published every December and May by the National Student Clearinghouse Research Center. It provides national enrollment estimates by institutional sector, state, enrollment intensity, age group, and gender. Enrollment estimates are adjusted for Clearinghouse data coverage rates by…

The four representative models that define oxidation-reduction reactions are often used differently in different situations or contexts in chemistry textbooks. Although integrated models have been suggested to overcome the confusion caused by this, they have not been successful. We therefore aim to interpret the causes for difficulties in the…

PISA study has defined several key areas to be paid attention to by teachers. One of these areas is work with models. The term model can be understood very broadly, it can refer to a drawing of a chemical reaction, a plastic model, a permanent mount (taxidermy) to advanced 3D projections. Teachers are no longer confined to teaching materials and…

History teachers have frequently made recourse to character cards as a device to help young people, each assigned specific roles, to understand how different kinds of people responded in different ways to particular situations in the past. Edward FitzGerald builds on this tradition, demonstrating the value of using rich historical accounts to help…

We address the problem of selecting the best of a set of units based on a criterion variable, when its value is recorded for every unit subject to estimation, measurement, or another source of error. The solution is constructed in a decision-theoretical framework, incorporating the consequences (ramifications) of the various kinds of error that…

In the early 1990s, Chip Bruce created a taxonomy of education technology uses, which the author of the article helped to expand and evaluate. This taxonomy is based on John Dewey's "four impulses of the child": inquiry, construction, communication, and expression. This taxonomy has helped people interested in the uses of…

This article offers a situation, with several examples, where confidential settlements can be used to combine the business school case study method with the law school use of legal disputes to bridge the learning activities from the mid-level application of principles to the higher level activity of critiquing judicial work. Confidential…

Watching a debate can help people understand multiple points of view. At the conclusion of a debate, a consensus might occur after a deep analysis and discussion of the issues. Most students will participate in a class debate at some point in their schooling, but chances are that debate will not take place in math class. What could there be to…

The World Health Organization (WHO) is in the process of developing the 11th edition of the "International Classification of Diseases" ("ICD-11"). Part of this process includes replacing "mental retardation" with a more acceptable term to identify the condition. The current international consensus appears to be replacing "mental retardation" with…

This article describes activities in which students sample, investigate, classify, and compare characteristics (i.e., texture, color, density, porosity) of local soils, evaluating whether the soils are healthy or at risk. Students investigate correlations between geology and geography, predict which soil types may go extinct in their state, and…

Originally published in 1994 by ZERO TO THREE as the "Diagnostic Classification of Mental Health and Developmental Disorders of Infancy and Early Childhood" ("DC:0-3") and revised in 2005 by ZERO TO THREE as the "Diagnostic Classification of Mental Health and Developmental Disorders of Infancy and Early Childhood, Revised…

Fine-grained data on religious communities are often considered sensitive in South Asia and consequently remain inaccessible. Yet without such data, statistical research on communal relations and group-based inequality remains superficial, hampering the development of appropriate policy measures to prevent further social exclusion on the basis of…