Lifelong Learning Programme

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Teaching Resources

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TEACHING RESOURCES INFORMATION

TITLE OF TEACHING RESOURCE
Free Online Stoichiometry Course
IMAGE
NAME OF AUTHOR(S)
David Yaron, Rea Freeland; Colin Ashe; Michael Karabinos; Kirk Zhang; Keith S Williams; Nathan Dobson
NAME OF PRODUCER
Nacional Science Digital Library
DATE OF PRODUCTION
2000
TYPE OF PRODUCT
Online course, Web Site/Portal
LEVEL OF CHEMISTRY KNOWLEDGE
Medium
PEDAGOGICAL APPROACH
Problem solving, Peer education, Experiential learning
SUBJECT AREA
Fundamental Chemistry
TARGET GROUP LEVEL
Upper Secondary School
LANGUAGE/S OF TEACHING RESOURCES
English
TUTORIAL SUPPORT
Yes
DESCRIPTION
This course can be taken by secondary school students as an additional resource to practice stoichiometry and by university students that would like to review this thematic. Therefore, very basic knowledge of the meaning of chemical formulas and chemical reactions is needed.
The material is divided in the following main topics: Introduction; The mole; The arsenic problem in Bangladesh; Measuring arsenic in the lab; Basic tools of stoichiometry; Testing water for arsenic contamination; Using density to check arsenic concentrations; Arsenic remediation; Empirical formula; Reaction stoichiometry; Limiting reagents; Titration; Analysis of mixtures.

The study of these concepts is integrated in a real-world scenario: Arsenic contamination in the ground water of Bangladesh.
Each module includes an introductory movie and some interactive problems with hints. Additional activities may include experiments in a virtual lab.

This resource is divided in several modules that can be used in consecutive classes. It can also be explored by students as homework.
COMMENTS
This digital resource results from the collaboration of the ChemCollective organization with the Carnegie Mellon's Open Learning Initiative.
The learning script is very well organized, with an attractive design. It is very appealing as the chemistry topics are integrated in a real world scenario where problems need to be solved.
One of the biggest points of strength is the variety of activities: videos, worked problems and experiments in a virtual lab.
Unfortunately the site is only available in English.
NAME OF THE REVIEWING ORGANISATION
Instituto Politécnico de Bragança

Comments about this Publication

Your comments are welcome


Date: 2013.01.25

Posted by Aleksandra Smejda - Krzewicka (Poland)

Message: Stoichiometry Bridge Course
The ChemCollective, in collaboration with Carnegie Mellon\'s Open Learning Initiative is offering free access to an online course in stoichiometry. The course is aimed at:
- High school students who would like additional help and practice with stoichiometry concepts and problem solving
- Students about to enter AP or college chemistry who would like a review of stoichiometry
Topics covered
The course begins with foundation topics such as dimensional analysis, significant figures, the mole, and molecular weight (molar mass.) This is followed by solution, composition and reaction stoichiometry. The most advanced topics are empirical formula, limiting reagents, titrations, and using reactions to determine the composition of mixtures. You can easily customize the syllabus to offer your students any subset of these topics.
Before taking the course, students need only have a basic familiarity with the meaning of chemical formulas, such as H2O, and reactions, such as that for the burning of Hydrogen in air: 2H2 + O2 --> 2H2O.
Course features
Each topic of the course includes an introductory movie and some interactive problems with hints. These serve as interactive worked examples since reading all the hints walks you through how to do the problem. Most topics conclude with either a virtual lab, that allows students to apply their knowledge by designing and carrying out an experiment or a randomized activity that gives help and feedback as students solve a challenging problem.
A very interesting proposal for chemistry class.

Date: 2013.01.14

Posted by Divna Brajkovic (HELMo) (Belgium)

Message: This resource can be useful to diversify learning methods. Indeed, it offers, according to learning topics, very interesting investigation situations. With the investigation approach the pupil becomes an actor of their training. It motivates the pupil by giving meaning to the activities. Moreover, it encourages autonomy through individual work or work in small groups.
The learning situations selected are interesting problems often rooted in real life. These problematic situations encourage the learner’s questioning and thus their interest.

However, it must be pointed out that the investigation method favoured in these tools is the experimental approach in a virtual laboratory.
And yet, with an experimental approach really experienced during lab sessions the pupils can use several skills. It is one of the assets of a chemistry lesson that raises students’ motivation and helps understanding the phenomena studied.
However, the virtual lab can have some advantages. Indeed, the student can safely carry out virtual experiments to check/try out their skills.
Moreover, if the teacher does not always have a laboratory at their disposal, this virtual laboratory can on occasions replace real life experiments.

National Reports on successful experiences to promote lifelong learning for chemistry The national reports on chemistry successful experiences to promote lifelong learning for chemistry are now available on the related section of the project portal. The reports presents examples of successful experiences in the partner countries and the results of testing of ICT resources with science teachers.

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