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CHEM II: 9.4.12

CHEM II: 9.4.12

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CHEM II: 9.4.12

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  1. CHEM II: 9.4.12 • OBJECTIVES: • I can follow the procedures and policies outlined in the syllabi • I can reflect on who I am and what goals I have for this class • I can share some information about myself with my class to promote a safe & fun learning environment • MANDALA PROJECT  • WRITING ACTIVITY • CLASS INTRO • SYLLABUS—SIGNED BY FRIDAY • PERSONAL INFORMATION SHEET • …FINAL EXAM  • I need to see growth! http://www.youtube.com/watch?v=eWXOurnVTYg

  2. CHEMISTRY AGENDA: 9.4.12 • OBJECTIVES: • I can follow the procedures and policies outlined in the syllabi • I can reflect on who I am and what goals I have for this class • I can share some information about myself with my class to promote a safe & fun learning environment • CD Label Project: DUE TUESDAY, SEPTEMBER 11TH! • FINAL EXAM • Already…? • Please try your best! I need a marker for your progress this semester. You will see this exam at the end of the semester! • You NEED A PENCIL! (SCANTRON SHEET) • When finished: • Fill out a Personal Info Sheet & hand in basket • Start working on CD label project! http://www.youtube.com/watch?v=eWXOurnVTYg

  3. CHEMISTRY II AGENDA: 9.5.12 • JOURNAL #1… • SIG FIG ASSESSMENT  • CH. 1 NOTES • PRACTICE SHEETS • HOMEWORK: SF PACKET http://www.youtube.com/watch?v=bI7AUgp5fPI http://www.youtube.com/watch?v=3heqhwoqVTE

  4. Journal #1 Successful people set goals for themselves. What are four goals you have for 1stSemester? • School • Personal • Extra-curricular • Social

  5. CHEMISTRY AGENDA: 9.5.12 • JOURNAL #1… • CLASS/TEACHER INTRODUCTION • SEATING CHART, SYLLABUS, TEXTBOOKS • GUMMY BEAR SACRIFICE • Scientific observations & conclusions • START CHAPTER ONE! • Notes • Scientific Method partner worksheet • Graphing Scientific Method • HOMEWORK: Lab Skills Checkup

  6. CHEMISTRY II AGENDA: 9.6.12 • Hand in SF homework sheet! • BOOKS! • Finish Note packet • PRACTICE SHEETS • SODA SNAKE??? • HOMEWORK: http://www.youtube.com/watch?v=GCiITeJcQOI

  7. CHEMISTRY I AGENDA: 9.6.12 http://www.kens5.com/news/Texas-doctors-remove-60-pound-tumor-137861838.html • JOURNAL #2 WRITE DOWN THE JOURNAL STATEMENT BELOW IN YOUR NOTEBOOK: • Complete: “If I were a teacher I would…” using at least 4 sentences. • Solve the “Bus Stop Queue” (other slide…) • REMINDER: SIGNED SYLLABI FRIDAY! • CD LABEL DUE TOMORROW • START CH 1 NOTES: SCIENTIFIC METHOD • RULER LAB • HOMEWORK: LAB SKILLS CHECKUP • Today’s Objectives: • IDENTIFY TOOLS USED IN SCIENCE LAB & THEIR FUNCTION • CRITIQUE ASPECTS OF SCIENTIFIC INVESTIGATIONS

  8. TWEET OUT… IN 140 CHARACTERS OR LESS: • What’s the difference between a law & a theory? • Write a theory (can be new or used).

  9. CHEM I AGENDA: 9.7.12 • JOURNAL #2Do problem #27 on p.30 of textbook • SIGNED SYLLABI & CD LABEL DUE NOW • Lab Safety & Lab Tools • Lab Tools Test: Wednesday, SEPTEMBER 12TH! (write this date down!) • LAB SAFETY SYMBOLS sheet • LAB TOOLS & LAB SAFETY VIDEO • CLICKR QUIZ… • Today’s Objectives: • IDENTIFY TOOLS USED IN SCIENCE LAB & THEIR FUNCTION • CRITIQUE ASPECTS OF SCIENTIFIC INVESTIGATIONS http://www.youtube.com/watch?v=5lDSjuo67LM

  10. CHEM II: 9.7.12 • INTRODUCE DIMENSIONAL ANALYSIS (DA) • Make METRIC SLIDER • 1.7 WORKSHEET • A little bit more DA practice… • HOMEWORK: ½ SHEET # 1-8 (9 & 10 EXCR)

  11. CHEM AGENDA: 9.10.12 • OBJECTIVES: • PRACTICE SCIENCE PROCESS SKILLS • CRITIQUE ASPECTS OF SCIENTIFIC INVESTIGATIONS • REVIEW WAYS TO COLLECT & ANALYZE DATA • JOURNAL #4Hypothesis: Mayonnaise will help plant growth. • Identify the manipulated variable • Identify the responding variable • Write a brief procedure to test the hypothesis above • FINISH Lab Safety & Lab Tools • Lab Tools Test: Wednesday, SEPTEMBER 12TH! (write this date down!) • LAB SAFETY SYMBOLS sheetS • LAB TOOLS & LAB SAFETY VIDEO • CLICKR QUIZ… • HOMEWORK: ID STEPS TO SCI METH & LAB SKILLS CHECKUP http://www.youtube.com/watch?v=5lDSjuo67LM

  12. CHEM II AGENDA: 9.10.12 • HAND IN FRIDAY’S DA HOMEWORK! • Finish Dimensional Analysis—group problems • More SF practice • Worksheets to complete: • SF evens • 1.4 RR • 1.6 PP • OBJECTIVES: • PRACTICE SCIENCE PROCESS SKILLS • CRITIQUE ASPECTS OF SCIENTIFIC INVESTIGATIONS • REVIEW WAYS TO COLLECT & ANALYZE DATA

  13. CHEM AGENDA: 9.11.12 • JOURNAL #5 DRAW 3 PIECES OF LAB EQUIPMENT, GIVE NAME & FUNCTION • Review for Lab Tools test! • Create a MARZANO graphic organizer of all 25 tools…(see next slide) • DESIGN DETECTIVES ACTIVITY • HOMEWORK: LAB SKILLS CHECKUP & STUDY FOR LAB TOOLS TEST TOMORROW! Today’s Objectives: • IDENTIFY TOOLS USED IN SCIENCE LAB & THEIR FUNCTION • CRITIQUE ASPECTS OF SCIENTIFIC INVESTIGATIONS HOME VOLLEYBALL GAME TONIGHT! BIG GAME—NEED YOUR SUPPORT! 

  14. CHEM II AGENDA 9.11.12 • SF EVENS worksheet DUE • Worksheets to complete: • SF evens • 1.4 RR • 1.6 PP • DENSITY LAB! HOME VOLLEYBALL GAME TONIGHT! BIG GAME—NEED YOUR SUPPORT! 

  15. LAB TOOLS • BUNSEN BURNER • IRON RING • RING STAND • STIR ROD • THERMOMETER • WELL PLATE • PIPESTEM TRIANGLE • WIRE GAUZE • TEST TUBE • TEST TUBE RACK • BEAKER • TEST TUBE CLEANER • SCOOPULA • FLASK • TONGS • PIPETTE • EVAPORATING DISH • MORTAR & PESTLE • BEAKER TONGS • WATCH PLATE • TEST TUBE HOLDER • FORCEPS • GRADUATED CYLINDER • FUNNEL • EYE DROPPER

  16. SYMPHONY OF SCIENCE http://www.youtube.com/watch?v=XGK84Poeynk

  17. CHEM AGENDA: 9.13.12 • JOURNAL 5Hypothesis:Bathing in radioactive waste will give you superhero powers. • Identify the manipulated&responding variables. • HAND BACK PAPERS & GO OVER GRADES! • Go over LAB TOOLS tests • finish notes • START Observation & Experimentation Lab • FIRST: pre-lab write-up • YOU CANNOT DO THE LAB IF THIS ISN’T DONE!!! (or if you haven’t turned in signed syllabus…)  • Today’s Objectives: • IDENTIFY TOOLS USED IN SCIENCE LAB & THEIR FUNCTION • CRITIQUE ASPECTS OF SCIENTIFIC INVESTIGATIONS

  18. M&M ACTIVITY • Obtain a bag of candy & count the total # of candies, & record the individual # of colors in a data table. • Record the % of each color in your data table. • Compare your percentages to the company’s official percentage of each color per bag. • Red 13%, blue 24%, yellow 14%, green 16%, orange 20%, and brown 13% • Choose an appropriate type of graph & create a graph to represent the data in your table. • Remember you are comparing sets of data!

  19. CHEM II AGENDA: 9.13.12 • GO OVER SIG FIG Papers…questions before quiz?? • QUIZ: SF, DA, SCI NOT • START BEVERAGE DENSITY LAB • HOMEWORK: 1-7 APPLY • Some of you are slacking on your homework! Pick up the pace or you will fall into a big rut…

  20. CHEM AGENDA 9.14.12 • JOURNAL 6 • PROBLEM: Will a gummy bear get bigger if I put it into a cup of water? What if I put it into a cup of corn syrup? • CREATE A HYPOTHESIS • IDENTIFY MV & RV • GO OVER LAB QUIZZES & GRADES • START Observation & Experimentation Lab • FIRST: pre-lab write-up • YOU CANNOT DO THE LAB IF THIS ISN’T DONE!!! (or if you haven’t turned in signed syllabus…)  • THEN: CONCLUSION & POST-LAB QUESTIONS • Today’s Objectives: • IDENTIFY TOOLS USED IN SCIENCE LAB & THEIR FUNCTION • CRITIQUE ASPECTS OF SCIENTIFIC INVESTIGATIONS http://video.foxnews.com/v/1428715045001/did-punxsutawney-phil-see-his-shadow/

  21. CHEM II AGENDA: 9.14.12 • GO OVER SF QUIZ & GRADES • BEVERAGE DENSITY LAB!

  22. CHEM AGENDA 9.17.12 • JOURNAL 7 Valerie bought 4 different brands of grape bubble gum. She would like to measure the diameter of a bubble from each brand. • Write a hypothesis • Identify the MV & RV • HAND IN HOMEWORK: Metric conversions • REVISIT ID STEPS TO SCI METHOD… • FINISH & HAND IN LAB—INCLUDING POST-LAB QUESTIONS & CONCLUSION! • HOMEWORK:1.4 WORKSHEET • Today’s Objectives: • IDENTIFY TOOLS USED IN SCIENCE LAB & THEIR FUNCTION • CRITIQUE ASPECTS OF SCIENTIFIC INVESTIGATIONS • CONVERT UNITS USING METRIC PREFIXES

  23. CHEM II AGENDA: 9.17.12 • FINISH & TURN IN BEVERAGE DENSITY LAB • Start Ch. 2: Energy, Temperature, & Matter • Movie on Temperature • Practice problems/HOMEWORK: _________ • TODAY’S OBJECTIVES: • IDENTIFY VARIOUS FORMS OF ENERGY • CONVERT BETWEEN JOULES & CALORIES • DISTINGUISH AMONG THE THREE TEMPERATURE SCALES WHERE WATER BOILS & FREEZES • CONVERT AMONG DEGREES CELCIUS, FAHRENHEIT, & KELVIN

  24. JOURNAL 6 Matthew bought three different types of balls—a bouncy ball, a tennis ball, and a softball—to see which one has the most bounce. • Write a hypothesis that includes the MV & RV. • Underline the RV and circlethe MV. • FIRST: QUIZ! • THEN: FINISH YESTERDAY’S LAB—POST-LAB QUESTIONS & CONCLUSION! • Today’s Objectives: • IDENTIFY TOOLS USED IN SCIENCE LAB & THEIR FUNCTION • CRITIQUE ASPECTS OF SCIENTIFIC INVESTIGATIONS

  25. CHEM AGENDA 9.18.12 • JOURNAL 8Write out the symbols for the metric prefixes IN ORDER! • Convert the following: • 1.50 L=____mL • 2300 g =____kg • 0.034 m=____cm • http://www.youtube.com/watch?v=CeyGEwjLPGw&feature=related • DIMENSIONAL ANALYSIS lesson • “Scientific Method & Measurement” UnitedstreamingVideo • MEASURING HANDS LAB • CHAPTER ONE QUIZ THURSDAY: Graphing & Variables • Today’s Objectives: • IDENTIFY TOOLS & SAFETY PRECAUTIONSUSED IN SCIENCE LAB • CRITIQUE ASPECTS OF SCIENTIFIC INVESTIGATIONS

  26. CHEM II AGENDA: 9.18.12 • QUicKwrITE: summarize yesterday’s video: The Race for Absolulte Zero. Include at least three interesting facts you learned. • START CH 2 NOTES: ENERGY & TEMPERATURE • GROUP/HOMEWORK: 2-2 APPLY & 2-2 RR • CONSERVATION OF MASS experiment..? • TODAY’S OBJECTIVES: • IDENTIFY VARIOUS FORMS OF ENERGY • CONVERT BETWEEN JOULES & CALORIES • DISTINGUISH AMONG THE THREE TEMPERATURE SCALES WHERE WATER BOILS & FREEZES • CONVERT AMONG DEGREES CELCIUS, FAHRENHEIT, & KELVIN

  27. CHEM AGENDA: 9.19.12 • JOURNAL 9 What SI units would I use to measure the following substances: • A glass of vinegar • A spoonful of sugar • The length of a strip of metal • The temperature of hot water • CHAPTER ONE QUIZ TOMORROW: Graphing & Variables • “Scientific Method & Measurement” UnitedstreamingVideo • Finish Measuring Hands Lab • Start Ch 2: Classification of Matter: Mixtures & Pure Substances (Elements, Compounds) • CLASSIFICATION ACTIVITY • HOMEWORK: 2.1 Study Guide

  28. CHEM II AGENDA: 9.19.12 • REVIEW… • Please hand in 2-2 PP & 2-1 RR • CONSERVATION OF MASS exp. • HOMEWORK: ENERGY CONVERSION PROBLEM SHEET • TODAY’S OBJECTIVES: • IDENTIFY VARIOUS FORMS OF ENERGY • CONVERT BETWEEN JOULES & CALORIES • DISTINGUISH AMONG THE THREE TEMPERATURE SCALES WHERE WATER BOILS & FREEZES • CONVERT AMONG DEGREES CELCIUS, FAHRENHEIT, & KELVIN

  29. CHEM AGENDA: 9.20.12 • Journal 10 GRAPH THE DATA BELOW: (line graph!) What kind of relationship does it show?? • HAND IN 2.1 worksheet & • ON YOUR DESK: JOURNALS #1-10 TO BE GRADED DURING QUIZ! • CHAPTER ONE QUIZ! (Graphing & Variables) • Chapter 2.1 Notes • CLASSIFICATION ACTIVITY • HOMEWORK: CONCEPT MAP OBJECTIVES: • Distinguish between phys/chem changes in terms of the properties of the reactants and products • Distinguish between an element, compound, or mixture based on drawings or formulae. • Identify a pure substance based on unique chemical and physical properties • Separate mixtures based on the differences in physical properties of the individual components • Recognize that the properties of a compound differ from those of its individual elements.

  30. CHEM II AGENDA: 9.20.12 • PLEASE HAND IN ENERGY CONVERSION PROBLEMS! • GRADES…sign sheets! • Start Atomic Theory Project • COMPUTERS!

  31. CHEM AGENDA: 9.21.12 • JOURNAL 11 Classify the following as either a pure substance or mixture: • Macaroni & cheese • Aluminum foil • Kool-Aid • Vegetable oil • Graphite pencil lead • GRADE SHEETS • SIGN & RETURN BY TUESDAY 9.25.12 • Notes… • Hand in ELEMENT, COMPOUND, MIXTURE drawing • MATTER MOVIE… ChemI\CHAPTER TWO\Physical_Science_Series__Mixtures_and_Solutions.asf • MATTER CONCEPT MAP & IDENTIFICATION LAB—(use concept map to help you!) OBJECTIVES: • Distinguish between phys/chem. Changes in terms of the properties of the reactants and products • Distinguish between an element, compound, or mixture based on drawings or formulae. • Identify a pure substance based on unique chemical and physical properties • Separate mixtures based on the differences in physical properties of the individual components • Recognize that the properties of a compound differ from those of its individual elements.

  32. CHEM II AGENDA: 9.21.12 • Finish Atomic Theory projects • HOMEWORK: more ENERGY CONVERSION PROBLEMS! • Have your grade sheet signed by MONDAY! OBJECTIVE: I CAN SHOW HOW THE ATOMIC THEORY WAS CREATED THROUGH SEVERAL SCIENTIFIC BREAKTHROUGHS AND MAJOR EXPERIMENTS.

  33. CHEM AGENDA 9.24.12 • JOURNAL 12 come up with your own example for the following types of matter: • Solution • Element • Colloid • Compound • Notes: 2.1-2.2 Physical Properties of Matter • MovieThe Science Behind the Sinking of the Titanic • CLASSIFICATION LAB • HOMEWORK: CLASSIFICATION LAB OBJECTIVES: • Distinguish between phys/chem. Changes in terms of the properties of the reactants and products • Distinguish between an element, compound, or mixture based on drawings or formulae. • Identify a pure substance based on unique chemical and physical properties • Separate mixtures based on the differences in physical properties of the individual components • Recognize that the properties of a compound differ from those of its individual elements.

  34. CHEM II AGENDA: 9.24.12 • Finish Atomic Theory Projects! • FINISH & HAND IN Energy Conversion problems (REDO..) • With time: LAB PREP! • Investigate the physical properties of iron oxide and salicylic acid • Pre-lab write-up

  35. CHEM AGENDA 9.25.12 OBJECTIVES: • Distinguish between phys/chem. Changes in terms of the properties of the reactants and products • Distinguish between an element, compound, or mixture based on drawings or formulae. • Identify a pure substance based on unique chemical and physical properties • Separate mixtures based on the differences in physical properties of the individual components • Recognize that the properties of a compound differ from those of its individual elements. • JOURNAL 13 • Write the formula for calculating density. • If I have a 30 gram object with a volume of 5 cubic centimeters, what is the density? Make sure to include proper units! • What is the density of an object have to be to float in water??? Will the above item sink or float? • Finish 2.2-2.3 notes • Density Lab  • MYTHBUSTERS  : Identify the hypothesis, variables, brief procedure, & conclusion! • HOMEWORK: 2.2 WORKSHEET

  36. CHEM II AGENDA: 9.25.12 • Go over ENERGY CONVERSION problems • FINISH & COMPILE POWERPOINT PRESENTATIONS ON ATOMIC THEORY… • LAB: Separation of a Mixture • PRE-LAB 1ST!!! • DON’T FORGET A CONCLUSION! • Start Chapter 3: Atomic Theory/Structure WITH TIME… • OBJECTIVE: I can separate mixtures based on the differences in physical properties of the individual components.

  37. CHEM AGENDA 9.26.12 • JOURNAL 14 • What is the density of a 12 gram item with a volume of 2 cubic centimeters. • What is the mass of an item with a density of 5 g/cm3 and a volume of 3 cm3? (HINT: REARRANGE THE DENSITY FORMULA) • Finish DENSITY LAB • GO OVER MATTER CLASSIFICATION ID LAB! ugh… • FINISH Ch 2.3 notes • SEE NEXT DUE FRIDAY. OBJECTIVES: • Distinguish between phys/chem. Changes in terms of the properties of the reactants and products • Distinguish between an element, compound, or mixture based on drawings or formulae. • Identify a pure substance based on unique chemical and physical properties • Separate mixtures based on the differences in physical properties of the individual components • Recognize that the properties of a compound differ from those of its individual elements.

  38. BOOK REVIEW PROBLEMS: • CHAPTER ONE, P. 29-30 • DEFINE ALL VOCABULARY WORDS (29 of them) • PROBLEMS #1-30 • CHAPTER TWO, P.63-64 • DEFINE ALL VOCABULARY WORDS (23 of them) • PROBLEMS #1-34

  39. CHEM II AGENDA: 9.26.12 • FINISH LAB & ATOMIC THEORY PROJECTS • START CH. 3 NOTES  • HOMEWORK: 3.1RR

  40. CHEM AGENDA 9.27.12 • JOURNAL #15 • CONVERT THE FOLLOWING: • 23.4 L=_____mL • 100 cm=_____km • 450 mg=_____cg • http://www.youtube.com/watch?v=GVJvoiNhMlU&feature=related • http://www.youtube.com/watch?v=rxb6UANXqU • Video review… • …YESTERDAY’S BOOK WORK! • MIXTURE SEPARATION LAB • HOMEWORK: 2.2 STUDY GUIDE! • TEST OVER CH 1-2 TOMORROW! OBJECTIVES: • Distinguish between phys/chem. Changes in terms of the properties of the reactants and products • Distinguish between an element, compound, or mixture based on drawings or formulae. • Identify a pure substance based on unique chemical and physical properties • Separate mixtures based on the differences in physical properties of the individual components • Recognize that the properties of a compound differ from those of its individual elements.

  41. CHEM II AGENDA 9.27.12 • Presentations… • HAND IN 3.1RR • START CH. 3 NOTES—UP TO ISOTOPES • QUANTUM LEAP LAB  • GROUPWORK/HOMEWORK: 3.3 RR & PP

  42. CHEM AGENDA 9.28.12 • JOURNAL 16 • LIST THE 7 PHYSICAL PROPERTIES WE STUDIED IN CH 2 & THE 2 CHEMICAL PROPERTIES. • WHAT’S THE DIFFERENCE BETWEEN A CHEMICAL & PHYSICAL PROPERTY? • FAST FIVE  • Finish MIXTURE SEPARATION LAB & turn in! • Group work on book work…. • HOMEWORK: 2.3 worksheet & CH 2 WORDWISE OBJECTIVES: • Distinguish between phys/chem. Changes in terms of the properties of the reactants and products • Distinguish between an element, compound, or mixture based on drawings or formulae. • Identify a pure substance based on unique chemical and physical properties • Separate mixtures based on the differences in physical properties of the individual components • Recognize that the properties of a compound differ from those of its individual elements.

  43. CHEM II AGENDA: 9.28.12 • DISMISS AT 2:00ish BY BAND TO PEP ASSEMBLY • FINISH PRESENTATIONS • HOMEWORK: 3.3 RR & PP

  44. OBJECTIVES: • Distinguish between phys/chem. Changes in terms of the properties of the reactants and products • Distinguish between an element, compound, or mixture based on drawings or formulae. • Identify a pure substance based on unique chemical and physical properties • Separate mixtures based on the differences in physical properties of the individual components • Recognize that the properties of a compound differ from those of its individual elements. CHEM AGENDA: 10.1.12 • TEST TOMORROW over Chapters 1 & 2! • JOURNAL 17 • IDENTIFY the following types of matter: (pure, mix, hetero, compound, etc...) • Milk • Aluminum • Sugar • List 2 examples of chemical changes and 2 examples of physical changes. • REVIEW SHEETS TOGETHER! • Book review: see next slide for problems! • FINISH LABS/QUESTIONS… • HOMEWORK: CH 2 WORDWISE & STUDY!

  45. BOOK REVIEW PROBLEMS—going over today! • CHAPTER ONE: start on page 29 • #3,6,9 • #14,17,21,23 • Page 31 #1,5,6 • CHAPTER TWO: start on page 63 • #1-10 • #15,18, 22,24, 27, 29, 33 • Page 65 #1,2,3

  46. CHEM II AGENDA: 10.1.12 • OBJECTIVE: I can describe the atom as mostly empty space with a dense nucleus containing protons & neutrons. • NOTES/LECTURE: START CH 3 ATOMIC THEORY & STRUCTURE • QUANTUM LEAP lab • GROUP WORK: work on packets up through 3.3 PP!

  47. CHEM AGENDA: 10.2.12 • JOURNAL 18 write three multiple choice test questions & circle the correct answer. • Grades… :/ • Finish labs • BOOK REVIEW! CH 1-2 TEST THURSDAY • PULL-OUT TOMORROW! • OBJECTIVES: Identify a pure substance based on unique chemical and physical properties

  48. CHEM II AGENDA: 10.2.12 • Finish Quantum Leap Lab • Catch up through 3.3 PP • Pre-lab… • OBJECTIVE: I can give the #of proton, neutron, and electrons in a given isotope or ion.

  49. CHEM II AGENDA 10.3.12 • REVIEW CALCULATING AVG ATOMIC MASS! • VIDEO CLIP • PENNY ISOTOPES ACTIVITY—hand in • START BEAN BAG ISOTOPE lab • GROUP/HOMEWORK: PACKET PAGES UP TO NUCLEAR STUFF—by FRIDAY!!!

  50. CHEM AGENDA: 10.4.12 • TEST DAY!  GOOD LUCK! • Please hand in 2 assignments from yesterday! WORDWISE & BOOK WORK • GET READY FOR TEST! The only thing on your desk: Pencil! • When you are finished: • Grab a packet of Ch. 3 notes • 3-hole punch them & put into your binder! • HOMEWORK: Worksheet 3.1 due TOMORROW • 3.1 video..