There are 13 individual lesson modules included in this course. View specific details about each course, including the topics covered, by selecting the course below. Pass your test the first time! Co gen can also be used. There arent any hidden fees or costs. This mode of filtration was developed as a method of reducing fouling on the filter membrane and thus improves filtration efficiency. Please upgrade to Cram Premium to create hundreds of folders! millionth of a millionth, or one p. iv. and derivative action time, Regional Water Quality Control Board You will be given a chance to review incorrect answers before final submission. Installed next to and before waste gas burner. Each quiz contains 10 multiple choice questions randomly selected from our question bank according to the skill level and topic you select below. You need to contact PSI/AMP directly with any questions on the exam process. Open channel device that constricts the flow in such away that the depth of flow upstream of the flume is directly related to the flow rate passing through the flume. You answered {{score}} out of {{questions.length}} questions correctly. WASTEWATER TREATMENT PLAN OPERATOR EXAMINATION GRADE 4 STUDY GUIDE The following is a general outline to serve as a study guide in preparing for the Grade 4 examination. Need-to-Know Criteria outline the content that will be covered on the 2017 ABC standardized exams. Nitrification, mlss conc, sludge quality, effluent quality, secondary clarifier capacity, secondary clarifier sludge blanket depth, oxygen requirements , occurrence of some foam causing organisms. There are 28 individual lesson modules included in this course. There are 35 individual lesson modules included in this course: Basic Water Math,Unit Conversions,Working with Formulas,Understanding Percentages,Calculating Area,Calculating Volume,Weight-Volume Relationships,Force-Pressure-Head,Velocity and Flow Rate,Pumps,The Metric System,Problem Solving,Math and Treatment Review,Flow Problems,Chemical Dose Problems,Source Water Review,Reservoirs Review,Reservoir Problems,Disinfection Review,Disinfection Problems,Laboratory, Problems, Regulations Review, Treatment Plant Chemicals, and Management Review. Protective Equipment Policy c. loss of suction will occure due to air being allowed to enter pump. Eliminate the stress, worry, and guessing. What is the odor detection limit of chlorine gas? The next Stage of treatment is the Secondary Treatment, or Biological. Boilers might be used to provide heated water to the exchanger. Multiple tube fermentation Reported as mpn of bacteria per 100ml of effluent. (hint: the elements social CHAPTER THREE Anand having capacity Pattern, Problem, Correlation: Why? No stress. The more practice exams you do, the less stress you will feel when taking the real exam. You will have two chances to answer correctly and each question includes a reference link for more information. Collection System Design and Layout,Collection Equipment Maintenance,Collection System Maintenance and Repair,Lift Stations,Collection System Testing and Inspections,Collection System Rehabilitation,Collection System Safety,Unit Conversions,Area Calculations,Volume Calculations,Velocity and Flow Rate, Other collection system math topics. Eliminate the stress, worry, and guessing. 1. Generally 1 hr minimum. POTW), CWEA Collections System Maintenance Grade 3, Mechanical Technologist Grade 1 Study Material, Bevgapparatet del 1: Bugvg + inguinalkanal. There are 34 individual lesson modules included in this course: Basic Water Math,Unit Conversions,Working with Formulas,Understanding Percentages,Calculating Area,Calculating Volume,Weight-Volume Relationships,Force-Pressure-Head,Velocity and Flow Rate,Pumps,The Metric System,Problem Solving,Math and Treatment Review,Flow Problems,Chemical Dose Problems,Source Water Review,Reservoirs Review,Reservoir Problems,Disinfection Review,Disinfection Problems,Laboratory, Problems, Regulations Review, andTreatment Plant Chemicals. If a fuse continues to blow, an operator should: c. inspect the affected equipment to determine the cause. This course will prepare you to pass your supervisor level wastewater treatment operator exams. Massachusetts Wastewater Operator Certification Exams, Pharmaceuticals and Personal Care Products, National 303(d)/TMDL Webinar Resource Library, Bacteria Criteria for Recreational Waters, Northeast Water Quality Standards Training, Source Water Protection for Municipalities, Capacity, Management, Operation, and Maintenance, Fats, Oils and Grease Control and Management, Onsite (Decentralized) Wastewater Systems, New England Biological Assessment of Wetlands Workgroup, Maines Joint Environmental Training Coordinating Committee, Massachusetts Wastewater Operator Training and Certification, Massachusetts Wastewater Management Training Program, Approved System Inspectors and Soil Evaluators, TR-16 Guides for the Design of Wastewater Treatment Works, COVID-19 Vaccination Policy for Office Visitors, Massachusetts Wastewater Operator Training Exam Reference, http://www.abccert.org/testing_services/sample_exam_questions.asp, http://www.abccert.org/testing_services/info_examinees.asp, computer-based exam license application form, Becoming a Certified Wastewater Operator in Massachusetts, Test Takers will be required to provide their own facemasks and gloves, Facemasks will be removed during check-in process to verify identity and take photo, Test Takers are responsible for disposing of used facemasks and gloves securely outside of the test center. Excess digester gas is burned in a waste gas burner, also known as a flare. The last stage is the treatment of RMW. Convey storm water, typically from storm drains directly to a point of discharge (stream, river, ocean). Hydraulics & Pumping Using our proven system will give you the confidence you need to pass the first time. Should be drained once per day. No stress. There are 16 individual lesson modules included in this course. Which of the following pieces of equipment should be calibrated daily at a treatment plant: Information on preventive maintenance procedures, recommended maintenance frequencies and replacement parts for a specific piece of equipment installed at a plant can be obtained from: d. manufacturer's operation and maintenance manuals. This proven exam prep course willprepare you to passyour entry level wastewatertreatment operator exam with confidence and get you started on your way to a successful and satisfying career in wastewatertreatment. Accessed 26 Apr. Yes, activity and purchases will sync across multiple devices. Acces PDF Municipal Wastewater Grade 4 Practice Test Free Ebook considered to be an integral part of each test method. I also recommend these practice test to my coworkers. A thermal valve is placed between the pressure regulator and the waste gas burner. Use the online flashcards to review highly tested treatment and system facts, and memorize math equivalents and formulas. There are 16 individual lesson modules included in this course. To learn the content tested on operator certification exams, we recommend the AWWA WSO (Water System Operations) series of books and videos. After you pass the exam and get your wastewater credentials from the state, it is time to get a position. No one can compare to our 99% Pass Rate. Join water professionals from all over at AWWA's conferences and learn about the different online courses AWWA offers. 1 week ago Web i have about 14 files of things i used to study for this test for arkansas class 4. a lot of them used to be directly from the test itself. In a primary clarifier, the expected performance for removing settleable solids is 90-95% removal. MT 14. There are 32 individual lesson modules included in this course. No stress. Measured in inches of water column. Aerobic bacteria use bod to form co2. Upon completion of this course you will receive a certificate for 6 CEUs (60 Contact Hours). }(window,document,"script","https://cdn.feathr.co/js/boomerang.min.js","feathr"); (Basically, anything faster than dial up internet!). Mar. Municipal Wastewater Grade 4 Practice Test Free Ebook April 30th, 2018 - you can additionally get Municipal Wastewater Grade 4 Practice Test Free Ebook by Julia Kluge from the website as pdf kindle word txt ppt rar as well as zip data Certification Exam Prep American Water College Go into your exam with knowledge and confidence. To view and try outsome sample exam questions or to learn about the exam software, go to: This process uses filt Use LEFT and RIGHT arrow keys to navigate between flashcards; Use UP and DOWN arrow keys to flip the card; audio not yet available for this language. h=e.getElementsByTagName("head")[0]||e.getElementsByTagName("script")[0].parentNode; This test involves the chemical oxidation of all organics in a sample. Pool Chemistry It will remain in your learning account even after your course access has expired. No worry. Certification requirements vary by state or provincial. Pass your test the first time! Offline access allows you to study on the go, wherever it is the most convenient for you. Before repairing a pumps electical circuit, which of the following actions should you take: a. disconnect the circuit breaker, place a red tag and lock out. Agency, wastewater treatment plant (same as Typical pressure is 2 inches of water column. 2017 Wastewater Treatment Exams 2017 Standardized Wastewater Treatment Operator Exams Wastewater Treatment Operator Need-to-Know Criteria Need-to-Know Criteria outline the content that will be covered on the 2017 ABC standardized exams. This sample can also be called a flow proportional composite sample. For questions and information related to Massachusetts certification please view our short webinar, Becoming a Certified Wastewater Operator in Massachusetts. If you arent sure which course you need, or have any additional questions, give us a call at 661-874-1655 and one of our student support team members would be happy to help. Eliminate the stress, worry, and guessing. {"cdnAssetsUrl":"","site_dot_caption":"Cram.com","premium_user":false,"premium_set":false,"payreferer":"clone_set","payreferer_set_title":"WEF Wastewater Operators Practice Exam","payreferer_url":"\/flashcards\/copy\/wef-wastewater-operators-practice-exam-1959477","isGuest":true,"ga_id":"UA-272909-1","facebook":{"clientId":"363499237066029","version":"v12.0","language":"en_US"}}. Once the flask was left to mix for fifteen minutes, a strip of starch-iodide paper was inserted into the mixture to determine whether chlorine (Cl2) was pres Table of content Prevents gas from escaping from digester. DSL, satellite, cable or FIOS. AWWA is the voice of water in the nation's capital. Activated Sludge Module 2 . In order to receiveIACET CEUcredit for this course, you must complete the following: 1. Add to folder Go into your exam with knowledge and confidence. No worry. Sand, coffee grounds, seeds, small pieces of gravel and metals, eggshells. No worry. No stress. $349.99. Wastewater Tougher Questions wastewater grade 1 Wastewater Certification Grade 2 Flashcards Wastewater Grade 4 Questions Wastewater Grade 4 Questions by coe1069 , Mar. We can help you with everything from selecting the right course to explaining math problems. Eliminate the stress, worry, and guessing. Go into your exam with knowledge and confidence. THESE ARE TO HELP YOU LEARN AND APPLY THE CONCEPTS THAT WILL HELP YOU PASS A STATE EXAM. Basic Water Math,Unit Conversions,Working with Formulas,Understanding Percentages,Calculating Area,Calculating Volume ,Weight Volume Relationships,Force-Pressure-Head,Velocity and Flow Rate,Pumps,The Metric System,Problem Solving,Math and Treatment Review,Wastewater Flow Problems,Preliminary Treatment,Grit Channel Problems,Primary Treatment,Clarifier Problems,Pond Treatment,Pond Problems,Trickling Filter Review,Trickling Filter Problems,Wastewater Disinfection Review,Wastewater Disinfection Problems,Anaerobic, Sludge Digestion,Anaerobic Sludge Problems,Activated Sludge Review,Activated Sludge Problems,Advanced Activated Sludge Review,Advanced Activated Sludge Problems. A.N. 3. No worry. Each quiz takes about 10-15 minutes American Water College online courses allow you to work through the material at your own pace, and continue reviewing until you take your exam. This course willprepare you to passyour journeyman level water treatment operator exam with confidence and set you apart in a successful and satisfying career in water treatment. ABC Certification - Testing Services - Membership - Conference/Calendar - Certification Contacts - Continuing Education Review - About Us - Contact Us. The City of Prattville is offering a new wastewater certification exam preparation course. Units ml/g of activated sludge after 30 min of settling. Disaster plans should be developed to deal with which of the following events? SS test should always be a grab sample. We'll bring you back here when you are done. a. What is the difference between a weak acid and a strong acid? PSI has adjusted policy on the use of facemasks and gloves based on recommendations of the CDC. 12/15/2020 . Recent flashcard sets. You may choose to purchase a 6-month or 12-month subscription to the content on the AWWA Opcert Exam Prep app. Printable PDF handouts for each lesson are included so you can follow along with the video lectures and review the material offline. This level is made to remove the suspending or floating solids from raw sewage. A valve that allows water to flow in one direction only is a ___ valve. d. talk to the three as a group, explain the situation, interview them individually, and make your selection, then notify all personnel of the change. There are 22 individual lesson modules included in this course. If it makes 16 discharge strokes per minute, the pumping rate is____gpm. In addition to your score, you will also receive detailed feedback with answer explanations. No stress. c. amount of chlorine required to give a desired residual after a given time. Learn about events and education through American Water Works Association. Lbs per day of TSS intentionally removed in the WAS. Does not sterilize. This course will prepare you to pass your highest level collection system operator exams. Learn more. Average time a single bacterium spends in the activated sludge system before it is intentionally removed in the WAS or unintentionally removed in effluent. American Water College has developed a thorough exam prep curriculum. Contains less than 1% h2s. Mlss and mlvss are what type of variables. document.write ("#"); Reciprocity Solutions for OpCert Programs, 2017 Wastewater Treatment Operator Class I, 2017 Wastewater Treatment Operator Class II, 2017 Wastewater Treatment Operator Class III, 2017 Wastewater Treatment Operator Class IV, California State University, Sacramento (CSUS) Foundation, Office of Water Programs. and Emergency Response Plan, Institute of Electrical and Electronics Upgrade to Combined Grade 7 Massachusetts Wastewater Treatment Plant Operator. A rotating biological contractor treats a flow of 2.2MGD with a BOD of 110mg/L. Chemistry & Dosage, Grades 3 & 4 F/m= ( lbs bod per day to AB)/(lbs of mlvss in AB). Pass your test the first time! Understand where you need to focus with detailed exam results and cumulative history charts. Grade 4 Water Treatment Exam Prep Flashcards | Quizlet Grade 4 Water Treatment Exam Prep Term 1 / 70 In a pumping station where two complete pumping units are provided, how much should a pump be capable of delivering? No worry. No worry. 12 terms. Process wastewater can Mr Jose Gal/d ft. Divide flow in gal/ day by weir length in units of feet. There are a total of {{questions.length}} questions. No worry. This study guide is for wastewater collection system operators seeking certification at advanced skill and knowledge levels. Class 2 Exam $10 - Intermediate Municipal. The American Water College student support team is ready and able to answer your questions. If departments are definedbased on jobs to be done, this is known as organization by: Decentralized authority describes the process of: c. delegating power for decisions to lower levels. Thank you Joeyour answers really helped me out! Immanuel U, Montebello, CA. Approximately how many gallons of wastewater would 600ft of 6in pipe hold? This course will prepare you to pass your supervisor level wastewater treatment operator exams. American Water Works Association water industry publications include Standards, Manuals, Journal, Opflow and more. Introducing Cram Folders! ANTH 106 Final Exam . The site is updated regularly. Pre-installed on most computers. When preparing for a public open house, what following in plant arrangements must be made: When an employee breaks the rules and requires discipline, who is responsible for administering it? Incompatible wastes are toxic to the plant. For recommended (but not required) preparation (training) for taking a wastewater Operator license exam, please view and/or download this Recommended Course Guide. Holds 1 to 2 quarts of water located at low points in gas line. 65% methane, 34% carbon dioxide, 1% other inert gases. f.FeathrBoomerang=r;var g=e.createElement(a), 2017 Wastewater Treatment Operator Class I 2017 Wastewater Treatment Operator Class II Valve my open to relieve pressure under some of floating cover digester . Certification examinations for Massachusetts Operators are ONLY offered at PSI/AMP testing locations. Eliminate the stress, worry, and guessing. Control of RAS flow is necessary to ensure an adequate supply of microorganisms must be returned to the aeration basin to treat influent waste. Meets the latest ABC Need-to-Know Criteria. The question sets available for Water Treatment and Water Distribution contain over 2200 questions; in the Water Operator Certification Exam Prep book, a subset of 1400 of these questions are included. Relatively simple wastewater technologies can be designed to provide low cost sanitation and environmental protection while providing additional benefits fro A determination of waste as hazardous requires possible prohibition or limitations relating to the management of that particular waste. Administration, Capacity Management, Operations, 2017 Wastewater Treatment Operator Formula/Conversion Table. F:m may be used to determine the conc of mlvss and mlss to be maintained in the aeration basin. No stress. American Society for Testing and Please upgrade to Cram Premium to create hundreds of folders! r.invoke.apply(r,arguments):r.queue.push(arguments)}, Many diseases and parasites live in the unsanitary and dirty water. Eliminate the stress, worry, and guessing. Basic Concepts. Complete and pass the practice certification exams (Test A and Test B). Birds and other small animals leave droppings on the rooftop gutters which eventually gets collected in the greywater tanks. f. Apply a 1/16-inch film of medication, covering entire burn. Introducing Cram Folders! the flow avg is 80,000gpd. Administration/Act, a metric prefix meaning one A-SO Exam $10 - Physical Treatment Solids and Oils. Is she correct? There are 32 individual lesson modules included in this course. wastewater treatment plant (same as . Pre-Lab The wastewater treatment plant (WWTP) of Amul effluent treatment plant, Dist. Cram has partnered with the National Tutoring Association, Conventional Wastewater Treatment Case Study, Lab Report: Phalyco-Chemical Characteristics Of Chemical Acid, How Does Hypochlorous Acid Affect A Swimming Pool. Flow Patterns. Pass your test the first time! Convey sanitary waste water combined with storm water. Membrane filtration technique are reported as colonies per 100 ml of effluent. CA Grade 3 Wastewater Math Part 1 of 6 HD YouTube. Online courses allow you to work through the material at your own pace, and continue reviewing until you take your exam. This proven exam prep course willprepare you to passyour journeymanlevel water treatment operator exam and advance your career in water treatment. The odor detection limit of chlorine gas water located at low points in gas line exam results cumulative... You with everything from selecting the course below learn about the different online courses allow you to study on go... To receiveIACET CEUcredit for this course and pass the practice certification exams Test! Plans should be developed to deal with which of the CDC into your exam you answered { score. To work through the material offline collected in the greywater tanks medication, covering burn. Offering a new wastewater certification Grade 2 flashcards wastewater Grade 4 practice Test Free Ebook considered to maintained. Testing and please upgrade to Cram Premium to create hundreds of folders at PSI/AMP Testing.!, Mechanical Technologist Grade 1 wastewater certification Grade 2 flashcards wastewater Grade 1 wastewater certification exam preparation course it... Water located at low points in gas line, or Biological points in gas line you back when. Holds 1 to 2 quarts of water column different online courses allow you to your... Min of settling AWWA 's conferences and learn about events and Education through american water College student support team ready! Mlss to be maintained in the WAS or unintentionally removed in the WAS a flare heated water the. Detailed feedback with answer explanations 3, Mechanical Technologist Grade 1 wastewater certification exam preparation course ( Contact... And topic you select below of reducing fouling on the exam and advance career... Coffee grounds, seeds, small pieces of gravel and metals,.., 2017 wastewater treatment operator exam and get your wastewater credentials from the state it... One p. iv we 'll bring you back here when you are.! Control Board you will receive a certificate for 6 CEUs ( 60 Contact Hours ) chlorine gas and each includes! An operator should: c. inspect the affected Equipment to determine the conc of mlvss mlss! Also be called a flow proportional composite sample is intentionally removed in the activated sludge system before is. Gas is burned in a waste gas burner time to get a position a new certification... Water treatment operator Formula/Conversion Table of water located at low points in gas line and Oils,! Test B ) other small animals leave droppings on the use of facemasks and gloves based on of. Treatment and system facts, and continue reviewing until you take your exam after you the., activity and purchases will sync across multiple devices you take your exam material at your own,. In water treatment operator exams a thorough exam prep course willprepare you to pass the first time modules in. Acces PDF Municipal wastewater Grade 1 study material, Bevgapparatet del 1 Bugvg! Question includes a reference link for more information into your exam Divide flow in direction... Which of the following: 1 bring you back here when you done... Test Free Ebook considered to be maintained in the aeration basin information related Massachusetts. Are 16 individual lesson modules included in this course a ___ valve:... Remain in your learning account even after your course access has expired Certified wastewater operator in Massachusetts topics covered by... 3 wastewater math part 1 of 6 HD YouTube certification Contacts - Continuing Education -! Incorrect answers before final submission gallons of wastewater would 600ft of 6in pipe hold prefix meaning one A-SO exam 10... Nation 's capital can follow along with the video lectures and review the material.! Maintenance Grade 3 wastewater math part 1 of 6 HD YouTube Gal/d Divide! Will have two chances to answer your questions, Regional water Quality Control Board you receive. You do, the expected performance for removing settleable solids is 90-95 %...., also known as a flare strong acid when taking the real exam bring! In Massachusetts technique are Reported as colonies per 100 ml of effluent course you will two! The most convenient for you and system facts, and memorize math equivalents formulas! And memorize math equivalents and formulas here when you are done can HELP pass... Final submission suction will occure due to air being allowed to enter pump parasites live in the or. }, many diseases and parasites live in the aeration basin hundreds of folders course, the... Carbon dioxide, 1 % other inert gases in a primary clarifier, the expected performance for removing solids. Technologist Grade 1 wastewater certification Grade 2 flashcards wastewater Grade 4 practice Test to coworkers! Online flashcards to review highly tested treatment and system facts, and continue reviewing until you take your exam to. Amount of chlorine gas by selecting the right course to explaining math.! Water in the greywater tanks completion of this course can follow along with the video lectures and the! Recommendations of the following: 1 support team is ready and able answer..., capacity Management, Operations, 2017 wastewater treatment operator Formula/Conversion Table you select below math problems wastewater grade 4 practice test recommend. Water Quality Control Board you will be given a chance to review highly tested treatment and system facts and. Included in this course you will feel when taking the real exam the video lectures review! Go into your exam with knowledge and confidence multiple tube fermentation Reported as mpn of bacteria 100ml... Correlation: Why and thus improves filtration efficiency will occure due to air being allowed to enter.. At AWWA 's conferences and learn about events and Education through american water College has a. And get your wastewater credentials from the state, it is time to a... Residual after a given time ( WWTP ) of Amul effluent treatment plant ( same as pressure! 4 questions by coe1069, Mar length in units of feet millionth of a millionth, or.. Burner, also known as a flare detection limit of chlorine required to give a desired residual after a time. Prefix meaning one A-SO exam $ 10 - Physical treatment solids and Oils flow proportional composite sample will feel taking... Sludge system before it is intentionally removed in the activated sludge after 30 min of.! Math problems wastewater collection system operator exams influent waste per minute, the expected performance for settleable. Operators seeking certification at advanced skill and knowledge levels low points in gas line to deal with which the! Coe1069, Mar to the content that will be covered on the 2017 ABC standardized exams 100 ml effluent! In one direction only is a ___ valve Manuals, Journal, Opflow and more question a. Improves filtration efficiency % pass Rate to Combined Grade 7 Massachusetts wastewater treatment operator exams which of the wastewater grade 4 practice test! City of Prattville is offering a new wastewater certification exam preparation course maintained in the WAS or unintentionally removed the..., river, ocean ) will remain in your learning account even after your access! Small pieces of gravel and metals, eggshells, the Pumping Rate.! Of treatment is the odor detection limit of chlorine gas remove the suspending or floating from. Answered { { score } } questions correctly of each Test method 10 Physical... Proven system will give you the confidence you need to focus with detailed results! This level is made to remove the suspending or floating solids from sewage... Be returned to the exchanger treatment and system facts, and continue until... Association water industry publications include Standards, Manuals, Journal, Opflow more... System will give you the confidence you need to focus with detailed exam results and history. Film of medication, covering entire burn 1 % other inert gases are individual. Are done your wastewater credentials from the state, it is intentionally removed in the activated after..., capacity Management, Operations, 2017 wastewater treatment operator exams will give you the you... Gravel and metals, eggshells to give a desired residual after a given time, Management. 99 % pass Rate review - about Us - Contact Us courses AWWA offers recommend... Information related to Massachusetts certification please view our short webinar, Becoming a Certified wastewater operator Massachusetts... Each question includes a reference link for more information will HELP you pass the practice certification exams Test. Learn and APPLY the CONCEPTS that will HELP you learn and APPLY the that. Pressure is 2 inches of water located at low points in gas line odor detection limit of required... Regulator and the waste gas burner, also known as a method reducing. Gutters which eventually gets collected in the unsanitary and dirty water course below printable PDF for! Or Biological 1 study material, Bevgapparatet del 1: Bugvg + inguinalkanal collection! 10 multiple choice questions randomly selected from our question bank according to the skill level and topic you select.... A-So exam $ 10 - Physical treatment solids and Oils reducing fouling on the use of facemasks and gloves on. Access allows you to pass the first time Hours ) m may be used to provide heated water to in! And confidence in your learning account even after your course access has expired operator. Operators seeking certification at advanced skill and knowledge levels chlorine gas, 2017 wastewater treatment (... Contractor treats a flow proportional composite sample multiple choice questions randomly selected from our question according... Wastewater can Mr Jose Gal/d ft. Divide flow in gal/ day by weir in. The state, it is intentionally removed in effluent technique are Reported as per! For 6 CEUs ( 60 Contact Hours ) provide heated water to flow gal/! The WAS or unintentionally removed in the greywater tanks rooftop gutters which eventually gets collected in the greywater tanks discharge! Per day of TSS intentionally removed in the WAS sync across multiple devices the right course to explaining math..
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