Online Science Tutors

We love science and we want you to love it too. Knowledgable and inspiring online science tutors are just a click away. If you’re looking for more subject-specific help, we have tutors available who can help with more in depth biology, chemistry and physics topics.

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Why get science help online?

Discoveries in science are discoveries that help us understand how the world works. Science students in elementary and middle school have the privilege to look at many different branches of science at an introductory or basic level. From biology to physics to chemistry to earth science, they’re taking in a lot of information. In some cases, students may develop a particular interest in certain aspects of their science class. Online tutoring is a vehicle that allows them to explore further in these certain areas.

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On the other hand, an online science tutor can provide the help a student needs if he or she is struggling with a particular subject within science. Don’t let difficulty with physics concepts drag your grade down! Connect with a tutor for science help online and pick up those homework grades.

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Get Yourself the Best Online Science Tutors for Study Help

The three main subjects of science are biology, physics, and chemistry. So, if you are searching for a science tutor, you will need to search for a tutor who is qualified to teach you all three subjects perfectly. Or you can even hire separate tutors for all three subjects. It will depend on the level of your grade. If you are studying in school, a single tutor may be able to help you in all the subjects, but if you are looking for a tutor for higher studies, you will require separate tutors with specialist knowledge in all three separate subjects, like physics tutor , chemistry tutor , and biology tutor . 

So, whatever your study needs are, if you are facing problems in grasping science concepts, you should look for a quality online science tutor for help. You can easily understand every topic with the guidance of a private online tutor . 

What Can a Science Tutor Offer?

Science is a fascinating subject that is crucial for everyone to understand. We learn life lessons from it as well as about technology, engineering, and many more, making it relevant to our everyday lives. Science tutoring services are very helpful for students as students can get quality science instruction to clear their doubts and also to perform well in class. Students today face a gruelling study life full of deadlines, assignments, and homework that can be stressful. They have to focus on a variety of tasks and subjects. Many times, many students are unable to attend classes regularly due to work or other personal obligations, and then science tutors come in as major support for them to fill in their studies gap. 

Keeping this in mind, CrunchGrade decided to provide a 24/7 online tutoring service to students of all grades. This means, students in grades 5 through 12 can get in touch with our science tutors whenever they want and our tutors will be ready to give them their excellent service.

How Can CrunchGrade Help You Find a Quality Science Tutor Online?

CrunchGrade provides students with online science tutoring choices so they can learn the subject in an engaging way. In contrast to home tutoring, our tutors will employ cutting-edge teaching strategies and tailor each lesson to the student's needs. Students can choose from a large pool of highly competent Science tutors and plan an online tutoring session around their schedule.

CrunchGrade is one of the top online Science tutoring services today, offering an expert team of tutors that works with students to improve their knowledge and grade. These highly trained educators have earned degrees in science subjects from well-known universities all over the world. They have years of experience in teaching and tutoring students of all grades. In the field of online tutoring, CrunchGrade has upheld its reputation for reliability and has a keen understanding of students' study needs.

CrunchGrade offers 24-hour support to address students' every single problem area. Our tutors and mentors are passionate about solving students' problems. 

CrunchGrade ensures that it has tutors to teach Science to kids every year starting in year 5 and ending in year 12 in consideration of this. There is no need to be concerned about the expertise of our tutors because we employ only the best.

How to Join the Online Science Tuition Class?

If you have decided to hire an online science tutor at CrunchGrade simply follow these simple steps,

  • Choose a time at your convenience for a free trial class.
  • Register by clicking on the ‘Sign Up’ button.
  • Fill in the details.
  • You will receive an OTP, verify it.
  • You will receive a call from our representative to schedule a session.
  • If you are satisfied, enter your details and make the payment.
  • You will receive a confirmation email with the class details.
  • Download the required software and log in to the class at the scheduled time.

CrunchGrade is an online learning platform where students get LIVE science homework help by quickly selecting an online science tutor based on their experience, qualifications, and student reviews to schedule an instant online study session. Try your first lesson FREE for up to 30 Minutes! Book a session now!

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Students looking for science tutors also search for, frequently asked questions - online science classes.

Q: What is a tutor in science?

A: Science tutors plan lessons, prepare materials, encourage participation in learning, make sure students understand what is taught to them, monitor their progress, and keep records of attendance. The main focus is on 3 major subjects of science; biology, physics, and chemistry.

Q: What are the duties of a science tutor?

A: Science tutors are expected to provide complete lesson guidance to students. Moreover, science tutors can help them understand their lessons, monitor their progress, assist them when they seek study help or homework help, improves their skills in problem-solving, and prepares them for exams. 

Q: How can I be an effective science tutor?

A: First, you need to gain sufficient qualifications in science. You will also require teaching experience and a passion for teaching and exploring science-related subjects and topics to become an effective science tutor.

Q: How can I make money as a tutor?

A: If you possess the necessary qualifications and experience in science subjects and have a passion for science and teaching, you can make good money. But, you will need to groom yourself perfectly so that you can prove your worth to your students. 

Q: Is there a such thing as a science tutor?

A: Yes, science tutors who are responsible for teaching science lessons to students and also helping them solve their science problems. They also help with science homework. 

Q: How much do people pay for online tutoring?

A: The more experienced and more qualified a tutor is, the more ‌his/her tutoring charges. So, you need to find out what exactly a tutor charges by talking to them individually. You can also find out from your locality, what they are paying for online tutors. To know about the fees of online tutoring on CrunchGrade, contact our representatives. 

Q: How do I become a virtual science tutor online?

A: First, obtain genuine qualifications in science and earn some experience in teaching. Then learn how to make optimal use of virtual academic tools to improve your teaching skills. Once you are proficient you can contact established online education platforms like CrunchGrade, which will give your access to a huge student database for science tutoring services. You can register as a physics tutor, chemistry tutor, and biology tutor.

Q: Is online science tutoring effective?

A: These days online science tutoring has become very popular for the convenience of studying from the comfort of your home. It saves you time, money, and energy. You do not have to step out of your comfort zone for additional tuition classes. If you are looking for an established platform for online science teachers, CrunchGrade is an ideal place for you.

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Sat / act prep online guides and tips, the 5 best homework help websites (free and paid).

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Listen: we know homework isn’t fun, but it is a good way to reinforce the ideas and concepts you’ve learned in class. But what if you’re really struggling with your homework assignments?

If you’ve looked online for a little extra help with your take-home assignments, you’ve probably stumbled across websites claiming to provide the homework help and answers students need to succeed . But can homework help sites really make a difference? And if so, which are the best homework help websites you can use? 

Below, we answer these questions and more about homework help websites–free and paid. We’ll go over: 

  • The basics of homework help websites
  • The cost of homework help websites 
  • The five best homework websites out there 
  • The pros and cons of using these websites for homework help 
  • The line between “learning” and “cheating” when using online homework help 
  • Tips for getting the most out of a homework help website

So let’s get started! 

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The Basics About Homework Help Websites–Free and Paid

Homework help websites are designed to help you complete your homework assignments, plain and simple. 

What Makes a Homework Help Site Worth Using

Most of the best sites allow users to ask questions and then provide an answer (or multiple possible answers) and explanation in seconds. In some instances, you can even send a photo of a particular assignment or problem instead of typing the whole thing out! 

Homework help sites also offer more than just help answering homework questions. Common services provided are Q&A with experts, educational videos, lectures, practice tests and quizzes, learning modules, math solving tools, and proofreading help. Homework help sites can also provide textbook solutions (i.e. answers to problems in tons of different textbooks your school might be using), one-on-one tutoring, and peer-to-peer platforms that allow you to discuss subjects you’re learning about with your fellow students. 

And best of all, nearly all of them offer their services 24/7, including tutoring! 

What You Should Should Look Out For

When it comes to homework help, there are lots–and we mean lots –of scam sites out there willing to prey on desperate students. Before you sign up for any service, make sure you read reviews to ensure you’re working with a legitimate company. 

A word to the wise: the more a company advertises help that veers into the territory of cheating, the more likely it is to be a scam. The best homework help websites are going to help you learn the concepts you’ll need to successfully complete your homework on your own. (We’ll go over the difference between “homework help” and “cheating” a little later!) 

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You don't need a golden piggy bank to use homework help websites. Some provide low or no cost help for students like you!

How Expensive Are the Best Homework Help Websites?

First of all, just because a homework help site costs money doesn’t mean it’s a good service. Likewise, just because a homework help website is free doesn’t mean the help isn’t high quality. To find the best websites, you have to take a close look at the quality and types of information they provide! 

When it comes to paid homework help services, the prices vary pretty widely depending on the amount of services you want to subscribe to. Subscriptions can cost anywhere from $2 to $150 dollars per month, with the most expensive services offering several hours of one-on-one tutoring with a subject expert per month.

The 5 Best Homework Help Websites 

So, what is the best homework help website you can use? The answer is that it depends on what you need help with. 

The best homework help websites are the ones that are reliable and help you learn the material. They don’t just provide answers to homework questions–they actually help you learn the material. 

That’s why we’ve broken down our favorite websites into categories based on who they’re best for . For instance, the best website for people struggling with math might not work for someone who needs a little extra help with science, and vice versa. 

Keep reading to find the best homework help website for you! 

Best Free Homework Help Site: Khan Academy

  • Price: Free!
  • Best for: Practicing tough material 

Not only is Khan Academy free, but it’s full of information and can be personalized to suit your needs. When you set up your account , you choose which courses you need to study, and Khan Academy sets up a personal dashboard of instructional videos, practice exercises, and quizzes –with both correct and incorrect answer explanations–so you can learn at your own pace. 

As an added bonus, it covers more course topics than many other homework help sites, including several AP classes.

Runner Up: Brainly.com offers a free service that allows you to type in questions and get answers and explanations from experts. The downside is that you’re limited to two answers per question and have to watch ads. 

Best Paid Homework Help Site: Chegg

  • Price: $14.95 to $19.95 per month
  • Best for: 24/7 homework assistance  

This service has three main parts . The first is Chegg Study, which includes textbook solutions, Q&A with subject experts, flashcards, video explanations, a math solver, and writing help. The resources are thorough, and reviewers state that Chegg answers homework questions quickly and accurately no matter when you submit them.  

Chegg also offers textbook rentals for students who need access to textbooks outside of their classroom. Finally, Chegg offers Internship and Career Advice for students who are preparing to graduate and may need a little extra help with the transition out of high school. 

Another great feature Chegg provides is a selection of free articles geared towards helping with general life skills, like coping with stress and saving money. Chegg’s learning modules are comprehensive, and they feature solutions to the problems in tons of different textbooks in a wide variety of subjects. 

Runner Up: Bartleby offers basically the same services as Chegg for $14.99 per month. The reason it didn’t rank as the best is based on customer reviews that say user questions aren’t answered quite as quickly on this site as on Chegg. Otherwise, this is also a solid choice!

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Best Site for Math Homework Help: Photomath

  • Price: Free (or $59.99 per year for premium services) 
  • Best for: Explaining solutions to math problems

This site allows you to t ake a picture of a math problem, and instantly pulls up a step-by-step solution, as well as a detailed explanation of the concept. Photomath also includes animated videos that break down mathematical concepts to help you better understand and remember them. 

The basic service is free, but for an additional fee you can get extra study tools and learn additional strategies for solving common math problems.

Runner Up: KhanAcademy offers in-depth tutorials that cover complex math topics for free, but you won’t get the same tailored help (and answers!) that Photomath offers. 

Best Site for English Homework Help: Princeton Review Academic Tutoring

  • Price: $40 to $153 per month, depending on how many hours of tutoring you want 
  • Best for: Comprehensive and personalized reading and writing help 

While sites like Grammarly and Sparknotes help you by either proofreading what you write via an algorithm or providing book summaries, Princeton Review’s tutors provide in-depth help with vocabulary, literature, essay writing and development, proofreading, and reading comprehension. And unlike other services, you’ll have the chance to work with a real person to get help. 

The best part is that you can get on-demand English (and ESL) tutoring from experts 24/7. That means you can get help whenever you need it, even if you’re pulling an all-nighter! 

This is by far the most expensive homework site on this list, so you’ll need to really think about what you need out of a homework help website before you commit. One added benefit is that the subscription covers over 80 other subjects, including AP classes, which can make it a good value if you need lots of help!  

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Best Site for STEM Homework Help: Studypool

  • Best for: Science homework help
  • Price: Varies; you’ll pay for each question you submit

When it comes to science homework help, there aren’t a ton of great resources out there. The best of the bunch is Studypool, and while it has great reviews, there are some downsides as well. 

Let’s start with the good stuff. Studypool offers an interesting twist on the homework help formula. After you create a free account, you can submit your homework help questions, and tutors will submit bids to answer your questions. You’ll be able to select the tutor–and price point–that works for you, then you’ll pay to have your homework question answered. You can also pay a small fee to access notes, lectures, and other documents that top tutors have uploaded. 

The downside to Studypool is that the pricing is not transparent . There’s no way to plan for how much your homework help will cost, especially if you have lots of questions! Additionally, it’s not clear how tutors are selected, so you’ll need to be cautious when you choose who you’d like to answer your homework questions.  

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What Are the Pros and Cons of Using Homework Help Sites?

Homework help websites can be a great resource if you’re struggling in a subject, or even if you just want to make sure that you’re really learning and understanding topics and ideas that you’re interested in. But, there are some possible drawbacks if you don’t use these sites responsibly. 

We’ll go over the good–and the not-so-good–aspects of getting online homework help below. 

3 Pros of Using Homework Help Websites 

First, let’s take a look at the benefits. 

#1: Better Grades Beyond Homework

This is a big one! Getting outside help with your studies can improve your understanding of concepts that you’re learning, which translates into better grades when you take tests or write essays. 

Remember: homework is designed to help reinforce the concepts you learned in class. If you just get easy answers without learning the material behind the problems, you may not have the tools you need to be successful on your class exams…or even standardized tests you’ll need to take for college. 

#2: Convenience

One of the main reasons that online homework help is appealing is because it’s flexible and convenient. You don’t have to go to a specific tutoring center while they’re open or stay after school to speak with your teacher. Instead, you can access helpful resources wherever you can access the internet, whenever you need them.

This is especially true if you tend to study at off hours because of your extracurriculars, work schedule, or family obligations. Sites that offer 24/7 tutoring can give you the extra help you need if you can’t access the free resources that are available at your school. 

#3: Variety

Not everyone learns the same way. Maybe you’re more of a visual learner, but your teacher mostly does lectures. Or maybe you learn best by listening and taking notes, but you’re expected to learn something just from reading the textbook . 

One of the best things about online homework help is that it comes in a variety of forms. The best homework help sites offer resources for all types of learners, including videos, practice activities, and even one-on-one discussions with real-life experts. 

This variety can also be a good thing if you just don’t really resonate with the way a concept is being explained (looking at you, math textbooks!).

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Not so fast. There are cons to homework help websites, too. Get to know them below!

3 Cons of Using Homework Help Websites 

Now, let’s take a look at the drawbacks of online homework help. 

#1: Unreliable Info

This can be a real problem. In addition to all the really good homework help sites, there are a whole lot of disreputable or unreliable sites out there. The fact of the matter is that some homework help sites don’t necessarily hire people who are experts in the subjects they’re talking about. In those cases, you may not be getting the accurate, up-to-date, and thorough information you need.

Additionally, even the great sites may not be able to answer all of your homework questions. This is especially true if the site uses an algorithm or chatbot to help students…or if you’re enrolled in an advanced or college-level course. In these cases, working with your teacher or school-provided tutors are probably your best option. 

#2: No Clarification

This depends on the service you use, of course. But the majority of them provide free or low-cost help through pre-recorded videos. Watching videos or reading info online can definitely help you with your homework… but you can’t ask questions or get immediate feedback if you need it .

#3: Potential For Scamming 

Like we mentioned earlier, there are a lot of homework help websites out there, and lots of them are scams. The review comments we read covered everything from outdated or wrong information, to misleading claims about the help provided, to not allowing people to cancel their service after signing up. 

No matter which site you choose to use, make sure you research and read reviews before you sign up–especially if it’s a paid service! 

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When Does “Help” Become “Cheating”?

Admittedly, whether using homework help websites constitutes cheating is a bit of a grey area. For instance, is it “help” when a friend reads your essay for history class and corrects your grammar, or is it “cheating”? The truth is, not everyone agrees on when “help” crosses the line into “cheating .” When in doubt, it can be a good idea to check with your teacher to see what they think about a particular type of help you want to get. 

That said, a general rule of thumb to keep in mind is to make sure that the assignment you turn in for credit is authentically yours . It needs to demonstrate your own thoughts and your own current abilities. Remember: the point of every homework assignment is to 1) help you learn something, and 2) show what you’ve learned. 

So if a service answers questions or writes essays for you, there’s a good chance using it constitutes cheating. 

Here’s an example that might help clarify the difference for you. Brainstorming essay ideas with others or looking online for inspiration is “help” as long as you write the essay yourself. Having someone read it and give you feedback about what you need to change is also help, provided you’re the one that makes the changes later. 

But copying all or part of an essay you find online or having someone write (or rewrite) the whole thing for you would be “cheating.” The same is true for other subjects. Ultimately, if you’re not generating your own work or your own answers, it’s probably cheating.

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5 Tips for Finding the Best Homework Help Websites for You

Now that you know some of our favorite homework help websites, free and paid, you can start doing some additional research on your own to decide which services might work best for you! Here are some top tips for choosing a homework help website. 

Tip 1: Decide How You Learn Best 

Before you decide which site or sites you’re going to use for homework help, y ou should figure out what kind of learning style works for you the most. Are you a visual learner? Then choose a site that uses lots of videos to help explain concepts. If you know you learn best by actually doing tasks, choose a site that provides lots of practice exercises.

Tip 2: Determine Which Subjects You Need Help With

Just because a homework help site is good overall doesn’t mean that it’s equally good for every subject. If you only need help in math, choose a site that specializes in that area. But if history is where you’re struggling, a site that specializes in math won’t be much help. So make sure to choose a site that you know provides high-quality help in the areas you need it most. 

Tip 3: Decide How Much One-On-One Help You Need 

This is really about cost-effectiveness. If you learn well on your own by reading and watching videos, a free site like Khan Academy is a good choice. But if you need actual tutoring, or to be able to ask questions and get personalized answers from experts, a paid site that provides that kind of service may be a better option.

Tip 4: Set a Budget

If you decide you want to go with a paid homework help website, set a budget first . The prices for sites vary wildly, and the cost to use them can add up quick. 

Tip 5: Read the Reviews

Finally, it’s always a good idea to read actual reviews written by the people using these homework sites. You’ll learn the good, the bad, and the ugly of what the users’ experiences have been. This is especially true if you intend to subscribe to a paid service. You’ll want to make sure that users think it’s worth the price overall!

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What’s Next?

If you want to get good grades on your homework, it’s a good idea to learn how to tackle it strategically. Our expert tips will help you get the most out of each assignment…and boost your grades in the process.

Doing well on homework assignments is just one part of getting good grades. We’ll teach you everything you need to know about getting great grades in high school in this article.

Of course, test grades can make or break your GPA, too. Here are 17 expert tips that’ll help you get the most out of your study prep before you take an exam.

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Ashley Sufflé Robinson has a Ph.D. in 19th Century English Literature. As a content writer for PrepScholar, Ashley is passionate about giving college-bound students the in-depth information they need to get into the school of their dreams.

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English , French

Douala , Cameroon

USD $ 20 /hr

Edmund Otang A.

University of Douala

Pharmacist and Online Maths & Science Tutor

June 2014 - date: Preparing students in Maths, Biology, Chemistry and Physics into taking national and international exams into STEM universities December 2021 - date: Online Tutoring in Maths, Biology, Chemistry, Physics, English, French, Computer Science and Pharmacy courses for education companies (AirClass, Swotknot, TeacherOn) and independently.

Subjects : A-Levels, Algebra, Biology, Calculus, Chemistry, English, French, General Chemistry I, General Chemistry II, IB, IGCSE, Maths, Pharmacology, Pharmacy, Physics

Daniel's photo

4 years of tutoring

English , Korean , French

Calgary , Canada

CAD $ 30 /hr

University of Calgary , Sir Winston Churchill High School

Professional Tutor in Math, Computer Science, Programs and Statistics with over 4 years Experience.

I have had over 4 years of experience as a tutor and Instructor for Math, Statistics and Computer Programming combined. And I have worked in this field for years in different unpaid and paid professions that have developed my knowledge and ability to translate ideas to people. As I have worked with students, I have discovered that everyone will need different methods to help them learn. I am always willing to provide them with the adaptations that best fits them, and to guide them part-by part. I am always open to questions and discussions and would love to take part in any particular interests my students have in these fields. I employ a style in my session that will be paced based on the student's requests and researched requirements of learning, and can guarantee that students will be provided all the services to help understand theories. My methodology in teaching also will have a heavy weight on real applications and the use of problem solving to master skills. I have a Passion to pass on my knowledge for Math and Computer/Data Science and would love to meet new students. I can tutor for both High School and University Level Math and Computer/Data Science. And I have built experience with past examination formats from such courses. I can also tutor for high school Chemistry and Science courses, and to a high level on Java and Python. Students are required to send all material and clearly outline their requests before requesting a date a minimum of 24 hours prior to the session. Sessions that are excepted from this rule will be used with the "Immediate Response" Package. Specialized in: AP and IB Computer Science AP and IB Calculus Python, Java, C++, C University level Mathematics Computing Theories General Availability: Mondays 6am-11:30am, 2pm-11 pm Tuesdays 6am -12pm, 5pm-11pm Wednesdays 6am-10am, 12pm - 2pm, 4pm - 11pm Thursdays 6am -12pm, 5pm-11pm Fridays 6am-9am, 4pm-11pm Saturdays 6am-11pm Sundays 6am-7:30am, 2pm-11pm

Subjects : ACT Science, AP Calculus AB/BC, Applied Mathematics, C++, Calculus, Chemistry, Computer Science, Data Structures & Algorithms, Java, Linear Algebra, Object Oriented Programming, Pre-Calculus, Python, Statistics, Trigonometry

Saskia's photo

10 years of tutoring

English , Dutch

Kilmore , Australia

USD $ 40 /hr

University of Melbourne

A decade of experience with ESL and Science

Happy to provide a curriculum or assist you in specific needs and assignments. I love teaching ESL English and Science from 6yo kids to adults, and have also tutored elementary level math and algebra. I am a PhD in Biochemistry and Molecular Biology from the University of Melbourne, following a Masters in Molecular Mechanisms of Disease. I am Dutch Australian, passionate about taekwondo, and have lived and worked in South Korea as well. I have been tutoring online for around 10 years. Love to go hiking when I get the chance. I am outgoing and energetic, and happy to help you get confident in your skills. Connect with me for a free 15 min intro session to get to know each other.

Subjects : Basic Chemistry, Biochemistry, Biology, Dutch, ESL, Elementary Math, Elementary Science, English as Second Language, English as a Second Language (ESL), Middle School Science, Molecular Biology, Science

Yitzchak's photo

12 years of tutoring

English , Hebrew (modern) , Yiddish

Kings County , United States

USD $ 185 /hr

Yitzchak N.

CUNY Graduate Center , University of Pennsylvania , Beth Medrash Govoha , Touro University

A computer science professor with years of teaching and tutoring experience.

I have been teaching computer science and math on many levels for more years than I can count now (and with a background in math, you'd assume I can count reasonably high :). This includes tutoring, small groups, formal classroom settings, etc. I hold PhD in computer science from CUNY's Graduate Center and master's in computer and information science from the University of Pennsylvania. My rates vary by time of day, my "peak hours" are more expensive, but if you can meet during my preferred times it will be less expensive. I am very honest, you can ask about any subject and I will tell you exactly how qualified I consider myself to tutor it.

Subjects : C#, Data Structures & Algorithms, Database, Java, Math, Object Oriented Programming, Python

Mitchell's photo

5 years of tutoring

English , Spanish

Edmonton , Canada

CAD $ 53 /hr

Mitchell P.

Ontario Tech University

Physicist | Technology Consultant | Intelligent Systems Engineer | Entrepreneur

With my extensive expertise in nuclear physics, material science, energy science, and forensic physics, along with my entrepreneurial experience in technology consulting for Intelligent Systems Engineering, I bring a unique blend of professional and academic knowledge to the table. My ability to bridge the gap between complex scientific concepts and real-world solutions demonstrates my capability to make learning engaging and applicable. This approach not only fosters curiosity and critical thinking among students but also prepares them for future challenges in the field. As an entrepreneur, I also share insights on innovation, problem-solving, and the intersection of science and business. This perspective is invaluable for students aspiring to make significant contributions to technology and society. My multifaceted expertise, combined with my passion for clear communication and inspiring others, positions me as an excellent tutor and mentor in the realm of scientific and technological education.

Subjects : Biophysics, Calculus, Differential Equations, Entrepreneurship, Environmental Science, Linear Algebra, Material Science, Math, Neuro-diverse, Nuclear Physics, Physics, Product Design, Science, Statistics

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