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-. H. H. N. H. H. Cl. Cl. Cl. C. Cl. Low Budget Manipulatives to Improve Teaching Stoichiometry. A man was out walking in the desert when a voice said to him, "Pick up some pebbles and put them in your pocket, and tomorrow you will be both happy and sad." - PowerPoint PPT Presentation
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Low Budget Manipulatives
toImprove Teaching
StoichiometryC
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Cl
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Cl
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A man was out walking in the desert when a voice said to him, "Pick up some pebbles and put
them in your pocket, and tomorrow you will be both
happy and sad." The man obeyed. He stooped down and picked up a handful of pebbles and put them in his pocket. The next morning he reached into his pocket and found diamonds, sapphires,
rubies and emeralds. And he was both happy and sad. Happy he had taken some - sad
that he hadn't taken more.
Anthony FernandesLa Salle High School
(Pasadena)25 Years Education
Biology, Chemistry (All Levels), Genetics
Certified in Biotechnology
626.696.4337
B
Brian MillerLa Salle High School
(Pasadena)29 Years Education
Biology, Chemistry (All Levels), Environmental Science,
Anatomy, PhysicsSmart Notebook Trainer
626.696.4349
A
Housekeeping
Sign In Sheet
Cell Phones
Bathroom Breaks
Ask Questions
Name email
School
City
B
Difficulties in Teaching Stoichiometry
Resistance
MathConversionsFractions
Nomenclature
Reading the Problem
A
HOW TO SOLVE A PROBLEM
Step I. Understand the Problem(Put Your Pencil Down)
Collect Relevant DataRead the Question
What You Have (Knowns)What You Want (Unknowns)
Step II. Choose an Appropriate StrategyAct It Out
Choose an OperationDraw a Picture
Guess and CheckLook for a Pattern
Make a Chart or TableMake an Organized ListUse Logical Reasoning
Work Backwards
Step III. Solve The Problem(Pick Up Your Pencil)
Step IV. Analyze Your ResultDoes My Answer Make Sense?
Rafe
Esq
uit
hTeach
Lik
e Y
ou
r H
air
is O
n F
ire
Our Classroom
The 3 C's: Critical Thinking,
Communication, Collaboration
White BoardsHome DepotSize & SpacePresentationEncourages CollaborationCreates Focus
ManipulativesPrinter Overstocks
B
Pre - Stoichiometry
Periodic Table
Know Your Ions Memorize or Not to
MemorizeIon Cards
The Mole Triangle
A
Stoichiometry
Pre-Supposes Balancing Equations,
Chemical Reactions and Calculating Molar Mass
Introducing StoichiometryUtilize One Basic Balanced
EquationAmmonia N2 + 3H2 ---> 2NH3
Rust 4Fe + 3O2 ---> 2Fe2O3
Simple EquationVaried CoefficientsWork all Aspects
B
Synthesis
Decomposition
AB A + B
A + B AB
Double Replacement
AB + CD AD + CB
Single Replacement
AB + CD AD + B
N2 H2+ NH3
3 2
Fe O2+ 3 24 Fe2O3
What is the mole ratio for each of the following:
Fe : O2
Fe : Fe2O3
O2 : Fe2O3
Fe O2+ 3 24 Fe2O3
How many grams of rust (Fe2O3) can be produced from the complete corrosion of 15 grams of iron?
Step 1: Read the Question and Confirm Equation is Balanced
Step 2: Highlight Start (have) in Green and Stop in Red (want).
A
Fe O2+ 3 24 Fe2O3
How many grams of rust (Fe2O3) can be produced from the complete oxidation of 15 grams of iron?
Step 3: Use Stoichiometry Pieces to Create Roadmap
15 g Fe? g Fe2O3
B
Fe O2+ 3 24 Fe2O3
1 mole of given
moles ofwant
g.f.m. ofwant
g.f.m. ofgiven
moles of given
1 mole of want
grams ofwant
__ grams ofgiven
__molesof given
How many grams of rust (Fe2O3) can be produced from the complete oxidation of 15 grams of iron?
15 g Fe? g Fe2O3
Fe O2+ 3 24 Fe2O3
1 mole of given
moles ofwant
g.f.m. ofwant
g.f.m. ofgiven
moles of given
1 mole of want
grams ofwant
grams ofgiven
GRAMS GRAMSMOLES MOLES
grams of given
1 mole of given
gram formula massof given
1 mole of want
gram formula massof want
moles of wantfrom balanced
equation
moles of givenfrom balanced
equation
x x x =grams of
want
How many grams of rust (Fe2O3) can be produced from the complete oxidation of 15 grams of iron?
Step 4: Solve Problem Using White Boards
15 g Fe? g Fe2O3
A
Step 5: Compare, Correct and/or Present Work on White Boards.
Fe O2+ 3 24 Fe2O3
B
It is absolutely FREE!!!
How many grams Hydrogen are necessary to produce 0.75 moles of ammonia (NH3)?
A
N2 H2+ NH3
3 2
1 mole of given
moles ofwant
g.f.m. ofwant
g.f.m. ofgiven
moles of given
1 mole of want
grams ofwant
grams ofgiven
GRAMS GRAMSMOLES MOLES
grams of given
1 mole of given
gram formula massof given
1 mole of want
gram formula massof want
moles of wantfrom balanced
equation
moles of givenfrom balanced
equation
x x x =grams of
want
1 mole of given
moles ofwant
g.f.m. ofwant
g.f.m. ofgiven
moles of given
1 mole of want
grams ofwant
__ grams ofgiven
__molesof given
N2 H2+ NH3
3 2
How many moles of Hydrogen are necessary to produce 2.5 grams of ammonia (NH3)?
B
N2 H2+ NH3
3 2
1 mole of given
moles ofwant
g.f.m. ofwant
g.f.m. ofgiven
moles of given
1 mole of want
grams ofwant
grams ofgiven
GRAMS GRAMSMOLES MOLES
grams of given
1 mole of given
gram formula massof given
1 mole of want
gram formula massof want
moles of wantfrom balanced
equation
moles of givenfrom balanced
equation
x x x =grams of
want
1 mole of given
moles ofwant
g.f.m. ofwant
g.f.m. ofgiven
moles of given
1 mole of want
grams ofwant
__ grams ofgiven
__molesof given
N2 H2+ NH3
3 2
Your
Turn
What volume of oxygen is necessary to produce 1.5 grams of rust when an excess of iron is present?
Fe O2+ 3 24 Fe2O3
Suggestions
Student Created Problems
What do you suggest???
WPAs
Professional Development Workshops
by SMARTERTEACHER
SMART Boards and SMART Notebook in the Classroom
SMART Response in the Classroom
Effective Teaching Strategies for the Block Schedule
Teaching the Three C's: Critical Thinking, Communication and
Collaboration
Multiple Intelligences in the Science Classroom
Teaching to Both Sides of the Brain [email protected]
smarterteacher.blogspot.com
Attachments
Stoichiometry Moles to Grams.wmv
Stoichiometry Grams to Grams.wmv
