**ERIC Number:**EJ1052062

**Record Type:**Journal

**Publication Date:**2015

**Pages:**16

**Abstractor:**As Provided

**Reference Count:**48

**ISBN:**N/A

**ISSN:**ISSN-0020-739X

Constructing a Coherent Problem Model to Facilitate Algebra Problem Solving in a Chemistry Context

Ngu, Bing Hiong; Yeung, Alexander Seeshing; Phan, Huy P.

International Journal of Mathematical Education in Science and Technology, v46 n3 p388-403 2015

An experiment using a sample of 11th graders compared text editing and worked examples approaches in learning to solve dilution and molarity algebra word problems in a chemistry context. Text editing requires students to assess the structure of a word problem by specifying whether the problem text contains sufficient, missing, or irrelevant information for reaching a solution. Worked examples direct students to follow steps toward the solution, and its emphasis is on computation instead of the formation of a coherent problem model. Text editing yielded higher scores in a transfer test (which shared the same solution procedure as in the acquisition problems but differed in contexts), but not a similar test (which resembled acquisition problems in terms of both solution procedure and context). Results provide some theoretical support and practical implications for using text editing to develop a coherent problem model to facilitate problem-solving skills in chemistry.

Descriptors: Grade 11, Algebra, Chemistry, Problem Solving, Science Instruction, Secondary School Science, Word Problems (Mathematics), Editing, Scores, Skill Development, Foreign Countries, Scientific Concepts, Teaching Methods, Instructional Effectiveness, Concept Formation, Secondary School Students, Statistical Analysis, Misconceptions

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**Publication Type:**Journal Articles; Reports - Research

**Education Level:**Secondary Education; Grade 11; High Schools

**Audience:**N/A

**Language:**English

**Sponsor:**N/A

**Authoring Institution:**N/A

**Identifiers - Location:**Australia