Chemistry You Need to Know Research supporting the curriculum.
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Transcript of Chemistry You Need to Know Research supporting the curriculum.
Chemistry You Need to Know
Research supporting the curriculum
A quote that sums it all up
“We believe, after examining the findings of cognitive science, that the most effective way of learning skills is “in context”, placing learning objectives within a real environment rather than insisting that students first learn in the abstract what they will be expected to apply.” From the Executive Summary of What Work Requires of
Schools from The Secretary’s Commision on Achieving Necessary Skills, US Dept of Labor, June 1991
What’s wrong with the traditional curriculum?
Traditional Chemistry Curriculum
Learn all the concepts
Apply them to real-life scenarios
Problems with the Traditional CurriculumStudents don’t see connections between
conceptsStudents don’t see application to their livesStudents never read the “application”
included in traditional textbooksThe order makes sense to those that know
the whole story
What does a contextual approach look like?
Contextual Chemistry Curriculum
Learn as scientists learn
Arrange concepts in need-to-know order
What makes up a contextual program?The concepts are fit to the theme…not the
other way around!Text, practice problems and labs utilize the
themeThemes are chosen that interest studentsInquiry labs are used when appropriate
Research Supporting Contextual Teaching
Working Memory
Working memory is the memory we can currently access and use
People have between 5 and 9 “slots” of working memory that can be used at any given time
As they understand and integrate knowledge together, they begin to form chunks—each chunk then only ties up one working memory slot
The more information that is chunked, the more information you can deal with at one time
Working Memory & Teenagers
Although people have between 5 and 9 working memory slots available, how many are used for other things: Daydreaming Distractions Emotional concerns Physical concerns All the other things teenagers think about
Motivation
Motivation is the allocation of working memory slots
When students are motivated, they are more willing to allocate more or all of their working memory slots to the task at hand rather than other concerns in their life
Increased motivation = increased ability to process, integrate and understand information
Contextual Teaching and Motivation
Contextual teaching increases motivation, as shown in survey data to come later in this presentation
Therefore, contextual teaching leads to increased allocation of working memory slots
Short-term and long-term memory
The mind makes determinations on which pieces of information to discard and which to move to long-term memory
As much as 90% of the information in short-term memory can be discarded within 24 hours
Getting information into long-term memory
In order for information to move from short-term to long-term, the information must: Have meaning or relevance to the learner Be understood by the learner
For example, you may have understood the plot of a novel you read many years ago, but if it had no personal meaning or relevance, it’s now forgotten (Johnson)
Providing Relevance
Many programs provide relevance in side-bars, special vignettes, or after the “learning” has taken place This is called “application”
Application and contextual teaching are not the same
In application, you’re providing the meaning and relevance too late—you need to provide the context and meaning first, before you ask students to learn
Research Supporting Content Choices & Placement
College opinions on what HS students should learn Deters completed a survey of over 100 college
professors and published the result in J Chem Ed (October 2003)
7 topics were statistically in the top for importance: Basic skills (units, sig figs, graphing, etc.) Moles Dimensional analysis Stoichiometry Nomenclature Atomic structure Balancing equation
College opinions on what HS students should learn Besides the top 7 topics, many professors indicated in
comments that they preferred student that were comfortable talking about science, had positive attitudes (not afraid of chemistry), an appreciation for science in their lives and problem-solving abilities rather than those with more content memorization
Other studies have shown this as well (Gold, Barnard)
This is supported by research showing 70% of material learned in science courses is forgotten within 1 year if not used—they’ll forget most of the content between the HS course and their college course (Shumba)
HS Teachers’ Opinions
Deters surveyed 571 HS chemistry Teachers and published the results in J Chem Ed (Nov, 2006)
The HS teachers were much more focused on content than college professors
There was a list of topics that more than 90% of the teachers agreed should be in the class & are currently being taught
There was another list of topics that they agreed should be in the class but that they didn’t have time to teach (acid/base, collision theory, etc.)
Integration of this research
The topics desired by college professors and thought most important by HS teachers are in the first 6 chapters of the text (which are written to be followed sequentially) Placement of some of the “wish” list topics in these
chapters will allow more teachers to get to them The topics that far fewer HS teachers agreed
upon are in the last 6 chapters (which are written to be ala-carte and do not depend on each other) to allow for flexibility and personal interest and goals
Research supporting lab format and integration
America’s Lab Report
The National Research Council released America’s Lab Report in 2006.
This was a summarization of a large body of research on lab programs and suggestions for making lab programs effective
Their main suggestion was the creation of Integrated Instructional Units
Integrated Instructional Units
Labs should be integrated in the section—used before content introduction as much as possible
Saving labs until the end of the section, chapter or having them in a separate lab manual does not promote integration in the students mind with the content in lectures, discussions or readings
This curriculum contains embedded labs—placed where they fit in the reading/progression of the course.
Use of inquiry
The report also suggested the use of student-designed labs
Inquiry is used in this text by having students design their own procedures for investigations at least 1 time per chapter
Guidance during Inquiry
Research shows that novices at problem-solving processes need significant guidance This allows them to devote more working memory slots
to the science and not the design process
The text includes a section teaching students how to design labs and uses significant guidance in the beginning
Guidance is “weaned” away as students become more comfortable with the design process (begin to “chunk” it)
Results of student attitude surveys during field testing
Student Questionnaire
15 questions given as pre-survey. Previous science courses & books
15 questions given as post-survey Questions were matched, but pertained to this
class and this book.
Textbooks apply science to my life
Contextual Curriculum +1.68
Traditional Curriculum +0.54
Contextual gained 1.14 more than Traditional
I’m interested in chemistry
Contextual Curriculum +0.49
Traditional Curriculum -0.56
Contextual gained 1.05 more than Traditional
I feel chemistry is relevant to my life
Contextual Curriculum +0.71
Traditional Curriculum -0.13
Contextual gained 0.84 more than Traditional
I can see how different science concepts relate to each other
Contextual Curriculum +0.63
Traditional Curriculum -0.07
Contextual gained 0.70 more than Traditional
I like science class
Contextual Curriculum +0.37
Traditional Curriculum -0.29
Contextual gained 0.66 more than Traditional
I am able to read and understand science textbooks
Contextual Curriculum +0.97
Traditional Curriculum +0.34
Contextual gained 0.63 more than Traditional
I feel science is relevant to my life
Contextual Curriculum +0.46
Traditional Curriculum -0.11
Contextual gained 0.57 more than Traditional
I enjoy labs
Contextual Curriculum +0.10
Traditional Curriculum -0.46
Contextual gained 0.56 more than Traditional
I feel comfortable “doing science”
Contextual Curriculum +0.31
Traditional Curriculum -0.23
Contextual gained 0.54 more than Traditional
I feel comfortable using math in science
Contextual Curriculum +0.19
Traditional Curriculum -0.19
Contextual gained 0.38 more than Traditional
I understand what chemistry is about
Contextual Curriculum +0.89
Traditional Curriculum +0.57
Contextual gained 0.32 more than Traditional
I feel like I’ve “done science” in science classes
Contextual Curriculum +0.84
Traditional Curriculum +0.54
Contextual gained 0.30 more than Traditional
I learn better if science concepts are applied to my life
Contextual Curriculum +0.40
Traditional Curriculum +0.20
Contextual gained 0.20 more than Traditional
I enjoy designing my own lab procedures
Contextual Curriculum +0.25
Traditional Curriculum +0.62
Contextual lost 0.37 more than Traditional, but still showed a gain in student attitude
Curriculum Components
What’s the big picture?
Each chapter has: Introductory activity Sections learning material needed to understand the
theme. Each has practice problems including conceptual questions
Integrated labs, using the theme product whenever possible
At least one student-designed lab per chapter Chapter culminating project integrating all concepts and
applied to the theme (varying from pre-designed labs to student-designed labs to research and creative writing assignments).
Chapter summary and review
Support for the Teacher
Teacher’s Wrap-Around Edition
Practice problem answersTeaching tipsDemonstrationsLab prep/timingLab hints & sample dataOutside resources
Available in EDITABLE Digital form
PowerPoint presentations for each section including animations of molecular processes
Color images (in PPT format) from the text All labs to allow customization & printing/copying
for students to take into lab with them rather than carrying their book
Computerized EvamView TestBank All questions with numbers and most with chemical
formulas are algorithm questions, meaning there is almost an infinite possibility for different versions at the push of a button.
In Print & EDITABLE Digital
Reading guides for each sectionPractice problems for sections with
mathematic applicationSection quizzes for each sectionGrading Rubrics for each inquiry lab and
performance assessmentPre-made tests for each section
2 matched short versions & 2 matched long versions
References
References
US Department of Labor: The Secretary’s Commission on Achieving Necessary Skills, What Work Requires of Schools: A SCANS Report for America 2000, June 1991
Brooks, David. http://dwb4.unl.edu/TheoryPaper/compth.html, a paper integrating learning theories (working memory, motivation, etc.)
Johnson, Elaine. Contextual Teaching and Learning: What it is and why it works, Corwin Press, 2002
Deters, Kelly; What should we be teaching in high school chemistry, J Chem Ed, October 2003
Deters, Kelly; What are we teaching in high school chemistry, J Chem Ed, November 2006
More References
Shumba, Overson; Glass, Lynne W. J of Res. In Sci. Teach., 1994, 31, 381
Gold, Marvin. J Chem Educ. 1988, 65, 780 Barnard, JD (1956) Teaching High School
Science. Washington, DO: American Educational Research Association: Department of Classroom Teachers
National Research Council, America’s Lab Report: Investigations in High School Science. National Academies Press, 2006