Recent calls for reform in K-12 science education and the National Academy of Engineering's Grand Challenges for Engineering in the 21st Century emphasize improving science teaching, students' engagement, and learning. In this study, we designed and implemented a curriculum unit for sixth-grade students (i = 1305). The curriculum unit integrated…

Students from marginalized populations may be less likely to engage in science education and form science identities. Thus, science education should include culturally responsive pedagogy to engage students from diverse cultural and ethnic backgrounds and promote science identity in every student (Mhakure and Otulaja 2017). The author is a high…

In his interesting and informative book "Is That a Fact?," Joe Schwarcz avers that pigs do not sweat and the saying "sweating like a pig" originates in iron smelting. Oblong pieces of hot iron, with a fancied resemblance to a sow with piglets, cool in sand to the dew point of the surrounding air, and hence water condenses on…

This study aims to design a mechanism with which the density of any solid or liquid can be determined without measuring its mass and volume in order to help students comprehend the concept of density more easily. The "solidensimeter" comprises of two scaled and nested glass containers (graduated cylinder or beaker) and sufficient water.…

Tourism is important because it can revive economically a community around tourist attractions. North Sumatra Province, which includes Medan, shows great potential for the development of marine tourism. However, it is not run optimally. Moreover, poor quality infrastructure and human resources are also a threat to marine tourism in Indonesia. This…

A low-cost alternative to the typical scientific laboratory water bath or a hot plate stirrer water bath is proposed. Readily available immersion circulators have been developed for sous vide cooking. These precision cookers are designed to maintain water at an exact temperature and thus are well-suited for the similar laboratory requirements of a…

Nursery growers are one of the largest agricultural users of water. Researchers have been developing new water treatment techniques and technologies for nursery growers to assist in preserving this precious resource, yet adoption within the industry has been limited. Extension professionals need to work closely with nursery growers to encourage…

Agriculture's negative effect on water quality has become increasingly well documented. Farmers have a range of conservation practices available, yet rate of adoption is not optimal. Extension and other agricultural stakeholders play a key role in promotion of conservation practice adoption. We used survey data to examine relationships between…

This relatively rare thermometer has a rather unusual display: lower temperatures are located at the top of the scale, higher ones at the bottom. A sphere on a chain floats in a suitable liquid, sinking at high temperatures when the density of the liquid decreases and rising in the increased density at low temperatures. With reasonable effort and…

Promoting collaboration and discourse in asynchronous online courses is challenging; students need something engaging to talk about, a communications medium in which to fluidly discuss it, and a social environment that supports discourse. We designed a fully online introductory geoscience lecture and lab course called Geology Goes Hollywood that…

The comprehension of the reactivity of the elements is an important goal to be achieved in undergraduate courses in inorganic chemistry. Therefore, at Universidade Federal de São Carlos (UFSCar), the B.Sc. in chemistry has a laboratory course dedicated to the chemistry of the elements. However, we have noticed a decrease in students' interest in…

Background: Consuming sugar-sweetened beverages is associated with several chronic health conditions. In the United States, government regulations and behavioral health interventions to reduce the consumption of sugar-sweetened beverages and increase the consumption of healthy beverages have shown limited effectiveness. Differences in motivation…

Working with stories of children's relationships with place and technologies from an early childhood education pedagogical inquiry research project in Melbourne, Australia and Victoria, Canada, this article takes up the concept of "pedagogical intentions" to consider how educators and researchers might cultivate intentional teaching…

This paper tells about the mental model of prospective scholars on the topic of temperature and heat. The purpose of this research is to improve students' mental model by using problem based learning (PBL) model. The number of samples in the study amounted to 72 students with two different classes. The results of the study showed that, (1) the…

"You Live in a Watershed" is a state park exhibit about watersheds. We conducted a two-pronged assessment of learning and attitudes. Study 1 employed a pretest-intervention-posttest design with 30 children visiting the exhibit on a fieldtrip. We found significant increases in knowledge and attitudes. Study 2 was a quasi-experimental…