Problem Solving Strategies and Metacognitive Skills for Gifted Students in Middle School

This study is conducted to investigate if the designed four-step method strategy (GEAR strategy adapted from Polya, 1973) in solving math problems has improved students’ performance scores and enhanced the metacognitive skills of gifted students. The respondents of this study include middle school gifted students who took math eight course in the school year 2013-2014 at Westdale Middle School in East Baton Rouge Parish School System. There are four classes of math eight gifted students who participated in the study. The classes were chosen randomly for experimental and controlled group and were equalized on the basis of the pre-test results of the Module 1 Edusoft Test and the Metacognitive Activities Inventory (MCAI) questionnaire form. During the 4-week period, the experimental group received GEAR strategy while the controlled group used any method they had learned in solving math word problems systematically or nonsystematical way. After the 4-week training period, the results of paired-sample t-test showed that the experimental group’s post-test scores on Module 2 Edusoft test have increased but not overwhelmingly, however, there is a significant difference of their MCAI post-test. The results imply that GEAR strategy does affect the metacognitive skills of middle school gifted students in problem solving and creates a marginal improvement on their classroom performance. This study provides the discussions, implications, and suggestions

Radioactive Decay using Stella and AgentSheets

The topic of our Challenge Project is the half-life of radioactive elements. We chose this topic for several reasons. The 8th grade curriculum includes the investigation of fossils and radioactive elements. Students often have difficulty understanding and relating to this natural event since it cannot be observed. They do not see how it affects their lives today. Mrs. Java and I decided to have at least two of the investigated elements be related to medical procedures. The students are able to relate what they have learned and see how this information has an impact on peoples’ everyday lives. The radioactive elements used for the Challenge Project were: Carbon-14 that changes to Nitrogen; Iodine-131 that changes to Zenon-131; and Technetium-99 that changes to Ruthenium-99. The students were familiar with Carbon-14 since they read about the Ice Man and radiocarbon dating. Iodine-131 is use in medical procedures when diagnosing and treating cancer and thyroid problems. Technetium-99 is used to make images for the skeleton and heart muscle. It is also use for specialized medical studies on many other organs in the body. We chose to use two programs, Stella and Agent Sheets. Stella is a good program for the students to build models. It demonstrates the exponential decay of the radioactive elements. The students do not have to know a formula to build the model. Stella uses graphs and data tables to display the exponential decay of the elements. They can see the graphs being constructed at a slow pace and the data accumulated. The second program we chose was Agent Sheets. This program is good because the students have the visual representation of the element decaying over time. The students were then able to use the calculators with the Stella Program. They calculated the amount of time each segment on the data table represented in relation to their element’s half-life in Stella. The students are also able to calculate the amount of time each click represents when changing the parent element into the daughter element in the Agent Sheets Program. Exposing the students to new technology and experiences helps them learn in a different and more exciting way. They are able to construct concrete models that represent abstract natural events. Students can then calculate or predict outcomes that may not otherwise be experienced. They are able to see visual representations, learn how the information is applicable, making the concept or idea real to their everyday lives. Please unzip the attached files for a wealth of additional information

nanopub-java: A Java Library for Nanopublications

The concept of nanopublications was first proposed about six years ago, but it lacked openly available implementations. The library presented here is the first one that has become an official implementation of the nanopublication community. Its core features are stable, but it also contains unofficial and experimental extensions: for publishing to a decentralized server network, for defining sets of nanopublications with indexes, for informal assertions, and for digitally signing nanopublications. Most of the features of the library can also be accessed via an online validator interface.Comment: Proceedings of 5th Workshop on Linked Science 201