numeracy and quantities in chemistry
Post on 15-Jan-2016
39 Views
Preview:
DESCRIPTION
TRANSCRIPT
By: Robin Kapoor, Kin Wong, Dayana El-Rafehi
Activity #1: Jelly Bean Activity #2: A rule to remember Context: Numeracy Historical Background Activity #3: Numeracy in other subjects Backward Design Unit Plan Lesson Plans Activity #4: Mole Fun Discussion
Numeracy is the knowledge of the basic number skills and the ability to apply those skills in contexts that require high levels of literacy to interpret situations and make judgements
- Advert English Dictionary
Numeracy is the mathematics for effective functioning in one's group and community, and the capacity to use these skills to further one's own development and that of one's community.
Numeracy is a critical awareness which builds bridgesbetween mathematics and the real world, with all its diversity
- John Dingwall
Distinction between numeracy and mathematics was sharply drawn in the 18th and 19th centuries◦ Numeracy – a concrete skill embedded in the context of
real-world◦ Mathematics – abstract, formal subject of study
precollege work did not emphasize mathematics (ie. Harvard University did not even require basic arithmetic for admission until 1802)
Around 1800, there was an increased exposure to arithmetic which consisted of the study of practical skills aimed at boys planning to go into economics (practiced real life problems)
instead of learning abstract rules capable of generalization in the real world, students memorized the solution to each and every problem that is encountered
after the War of 1812, some educational theorists proposed entirely new ways to teach arithmetic
this new way of teaching introduced many people, males and females, to the basics of “quantitative literacy”.
It was not till 1998 that the term “numeracy” became common currency
“Mathematical literacy is particularly important for careers in science and technology, which ultimately enhance the capacity of the Canadian economy for innovation”
-Human Resources and Development Canada
There was a statistically significant difference between the estimated average combined mathematics scores of 15-year-old boys and girls in both 2003 and 2006. In 2003, boys had an estimated average score (541) that was 11 points higher than the score for girls (530). In 2006, the gap between the two genders remained relatively constant, at only 14 points; boys achieved an estimated average score of 534 while girls achieved a score of 520. Scores for both genders decreased between 2003 and 2006.
NATIONAL PICTURE:
than the Canadian average.
INTERNATIONAL PICTURE:
An increasing number of jobs require employees to handle data, work with spreadsheets, and interpret statistics.
been estimated that businesses spend more each year on improving employees' numeracy skills than the government spends on maths education in schools.
poor levels of numeracy are a greater barrier in the workplace than low levels of literacy
Numeracy for everyday life (e.g., budgeting, time management, games/sports, health related, and household tasks).
Numeracy for community, for civic participation, and for understanding social and political issues.
Work related numeracy, including measuring, scheduling, tracking/monitoring, and managing revenues and expenditures.
Numeracy for personal organization, in matters such as money, time, and travel.
Numeracy for knowledge and further learning (needed for further study in disciplines and trades requiring mathematics).
Each table group is given a subject (History, Science, Arts, English, Music, Phys-ed, etc)
Brainstorm, as a group, how numeracy is used/involved in these courses.
Mole Counting
What is Avogadro’s favourite soda drink? Who is Avogadro’s favourite rapper? What is Avogadro’s favourite summer fruit?
“A Mole Is A Unit”
Chemistry Grade 11: Quantities in chemical reactions
Overall ExpectationsD1: analyse processes in the home, the workplace, and the environment sector that use chemical quantities and calculations, and asses the importance of quantitative accuracy in industrial chemical processesD2: investigate quantitative relationships in chemical reactions, and solve related problemsD3: demonstrate an understanding of the mole concept and its significance to the quantitative analysis of chemical reactions
Big Ideas• Relationships in chemical reactions can be described quantitatively•The efficiency of chemical reactions can be determined and optimized by applying understanding of quantitative relationships in such reactions
Essential Question
How has our knowledge of the quantitative
relationships in chemical reactions used in the
home, the workplace and the environmental sector?
Guiding Questions•Why is a balanced chemical reaction essential? What type of information could be extracted from a balanced chemical reaction?• Based on your knowledge on the mole concept, how would you optimize the synthesis of a product in a chemical reaction?
DAY 1HOOK: The Dozen LabIntroduction to Mole concept
DAY 2Introduction to Avogadro’s number-conversions between number of particles and number of molesVideo-Mole DayClass work-Dozen vs. Mole
DAY 3Molar Mass and Moles (conversions between molar mass and moles) ACTIVITY: chalk labClass work-Worksheet
DAY 4Mass and Molecules(mass to particles; particles to mass) LAB: The bubble gum lab Class work- textbook work
DAY 5QUIZPART ONE:Percent Composition & Hydrates Self taught Lab, then debrief of what they learned
DAY 6PART 2:Lab continuationEmpirical & MolecularFormulaeClass work- textbook work
DAY 7 & 8Introduction to Stoichiometry Class work- worksheets
DAY 9Demo: limiting reagentLimiting Reagents and Excess ReagentsClass work- textbook work
DAY 10LAB : Limiting Reagents LabClass work- textbook work
DAY 11WORK PERIOD
DAY 12Demo:Percentage yieldClass work-Preparation for lab
DAY 13Lab: Percent Yield
DAY 14Review: Mole Race
DAY 15UNIT TEST
Overview, Expectations and Rationale1. Big Ideas: Understanding the significance of Avogadro’s
Number is chemistry Understanding conversions between moles and
number of atoms, particles, or molecules2. Ministry Expectations: Overall D3. Demonstrate an understanding of the mole
concept and its significance to the quantitative analysis of chemical reactions
Specific A1.12 use appropriate numeric, symbolic, and graphic modes of
representation, and appropriate units of measurement (e.g., SI and imperial units)
A1.13 express the results of any calculations involving data accurately and precisely, to the appropriate number of decimal places or significant figures
D2.1 use appropriate terminology related to quantities in chemical reactions, including, but not limited to: Stoichiometry, percentage yield, limiting reagent, mole, and atomic mass [C]
D3.2 describe the relationships between Avogadro’s number, the mole concept, and the molar mass of any given substance
Overview, Expectations and Rationale1. Big Ideas: Relationships in chemical reactions can be
described quantitatively The efficiency of chemical reactions can be
determined and optimized by applying an understanding of quantitative relationships in such reactions
2. Ministry Expectations: Overall D1. Analyze process in the home, workplace, and
the environment sector that use chemical quantities and calculations and assess the importance of quantitative accuracy in industrial chemical processes
D2. Investigate quantitative relationships in chemical reactions, and solve related problems;
D3. Demonstrate an understanding of the mole concept and its significance to the quantitative analysis of chemical reactions
Developing Skills of Investigation and Communication: D2.1 use appropriate terminology related to quantities in chemical
reactions, including but not limited to: stoichiometry, percentage yield, limiting reagent, mole and atomic mass [C]
D2.3 solve problems related to quantities in chemical reactions by performing calculations involving quantities in moles, number of particles and atomic mass [AI]
D2.5 calculate the corresponding mass, or quantity in moles or molecules, for any given reactant or product in a balanced chemical equation as well as for and other reactant or product in the chemical reaction [AI]
Understanding Basic Concepts: D3.2 describe the relationships between Avogadro’s number the mole
concept, and the molar mass of any given substance D3.4 explain the quantitative relationships expressed in a balanced
chemical equation, using appropriate units of measure (e.g. moles, grams, atoms, ions, molecules)
Brainstorm- ◦ the importance of numbers in our daily lives (where are
numbers used/required)- the mole and Avogadro's number-how does the mole relate to daily lives
Chalk activity-◦ Students can gather class data (input data on table on board)
and analyze the gathered data
Overview, Expectations and Rationale1. Big Ideas: Definite proportions of substances can be calculated,
and the relationship between Avogadro’s number, the mole concept, and the molar mass of any given substance.
2. Ministry Expectations: Overall D2. Investigate quantitative relationships in chemical
reactions, and solve related problems. D3. Demonstrate an understanding of the mole
concept and its significance to the quantitative analysis of chemical reactions
Specific D2.1 use appropriate terminology related to quantities in chemical
reactions, including, but not limited to: stoichiometry, percentage yield, limiting reagent, mole and atomic mass
D2.3 solve problems related to quantities in chemical reactions by performing calculations involving quantities in moles, number of particles, and atomic mass
A1.1 formulate relevant scientific questions about observed relationships, ideas, problems, or issues, make informed predictions, and/or formulate educated hypotheses to focus inquiries or research
A1.5 conduct inquiries, controlling relevant variables, adapting or extending procedures as required, and using appropriate materials and equipment safely, accurately, and effectively, to collect observations and data
A1.11 communicate ideas, plans, procedures, results, and conclusions orally, in writing, and/or in electronic presentations, using appropriate language and a variety of formats (e.g., data tables, laboratory reports, presentations, debates, simulations, models)
A1.12 use appropriate numeric, symbolic, and graphic modes of representation, and appropriate units of measurement (e.g., SI and imperial units)
A1.13 express the results of any calculations involving data accurately and precisely, to the appropriate number of decimal places or significant figures
For this lesson one could change the’ mini-lab’ to “guess the weight of each substance and win a prize”◦ The teacher could explain how all of the different compound
are one mole each (the teacher would write down all of the substances on the blackboard)
◦ This will motivate and encourage students to participate by actually estimating a weight through direct observation of the various substances
◦ this could illustrate to students the importance of estimations in science which is a crucial part of numeracy
Each table will be provided with one handout As a group work on solving the problems given After having completed the questions, check
answers with teachers circulating One person from the group is responsible for
coming up to board and writing down the appropriate words on worksheet that corresponds to the answers obtained
Words will form a sentence Fastest group to correctly obtain a sentence will
win a prize
To graduate from high school, students needs to have 3 credits in mathematics. Is this too few/much?
How can you alleviate the math/numeracy fear that some teachers may have?
Should the government implement an EQAO test for the grade 12s not as a requirement for graduation, but for the post- graduate school/workplace to assess the student’s capability in mathematics?
Is math inborn?
Cohen, Patricia (2001). The Emergence of Numeracy. In: Steen, L.A. (Ed.) Mathematics and Democracy, The case for Quantitative Literacy. USA: NCED, The Woodrow Wilson National Fellowship Foundation.
Dingwall, John. (2000). Improving Numeracy In Canada. 1-36 McCarthy, L and Zawojewski, J.S. (2007). Numeracy in
Practice. Principal Leadership (Middle School Ed., 7(5), 32-37
top related