Your smart study partner: homework help, exams and a full library
Ask any homework question and get a clear correction, like a teacher's. Revise with quizzes and a study plan, and find lessons and exams for your own country and level.
These answers were written by the SmartOstad AI and saved on this page, exactly as students and teachers receive them. Nothing here is a mock-up.
Homework help
A sets exercise, corrected the way a teacher would.
Question
Let A = {1, 2, 3, 4, 6} and B = {2, 4, 5, 6, 8}. Find A ∩ B, A ∪ B and A \ B.
AI correction
Given the sets and .
1. Find (Intersection)
The intersection of two sets and , denoted , is the set containing all elements that are common to both and .
Comparing the elements:
The common elements are .
2. Find (Union)
The union of two sets and , denoted , is the set containing all elements that are in or in (or both), without duplication.
Combining all unique elements from and :
Elements in :
Elements in :
Listing all unique elements: .
3. Find (Set Difference)
The set difference (also written as ) is the set containing all elements that are in but are not in .
Elements in :
Elements in :
We remove elements from because they are also in .
The remaining elements in are .
Homework help
An equation solved step by step, every calculation shown.
Question
Solve in ℝ: 2x² − 5x + 2 = 0.
AI correction
Solve in : .
Step 1: Compute the discriminant
Step 2: Calculate the real roots
Since , the equation has two distinct real solutions:
Step 3: State the solution set
*Verification:*
Exam generator
A teacher's test generated in seconds: exercises, points and answer key, exported as a ready-to-print PDF.
Test: sets and quadratic equations · 3 exercises · 60 min · 20 points
Quiz from a lesson
Give it a lesson: the AI writes the quiz, with the right answer and why.
Lesson
Photosynthesis is the process by which green plants make their own food. Using the energy of sunlight, the chlorophyll in their leaves turns carbon dioxide from the air and water from the soil into glucose, and releases oxygen. It takes place mainly in the chloroplasts of leaf cells.
1. Which of the following are the essential raw materials absorbed by green plants for photosynthesis?
Carbon dioxide and water (correct answer)
Oxygen and glucose
Nitrogen and sunlight
Chlorophyll and soil
Photosynthesis requires carbon dioxide from the air and water from the soil, along with sunlight energy, to produce food.
2. What is the primary food product created by green plants during the process of photosynthesis?
Glucose (correct answer)
Oxygen
Starch
Carbon dioxide
Glucose is the sugar produced during photosynthesis, which serves as the plant's food source. Oxygen is released as a byproduct.
3. Photosynthesis primarily occurs in which specific part of a plant's leaf cells?
Chloroplasts (correct answer)
Nucleus
Mitochondria
Cell wall
The process of photosynthesis takes place mainly within the chloroplasts, which are organelles found in the leaf cells of green plants.
Study plan
Two weeks before the exams, two hours a day (Mathematics · Physics): the AI plans every day.
Day 1
Mathematics: Algebra and Polynomials Review (60 minutes) - Focus on factoring, roots, and quadratic equations.
Physics: Kinematics and Motion in 1D (60 minutes) - Review displacement, velocity, and acceleration formulas.
Day 2
Mathematics: Functions and Graphing (60 minutes) - Analyze linear, quadratic, and exponential functions.
Physics: Vectors and Projectile Motion (60 minutes) - Practice vector addition and 2D motion problems.
Day 3
Mathematics: Trigonometric Identities and Equations (60 minutes) - Memorize core identities and solve basic equations.
Physics: Newton’s Laws of Motion (60 minutes) - Review free-body diagrams and friction calculations.
Made for classrooms in every country, in 8 languages: Arabic, English, French, Spanish, German, Chinese, Hindi and Russian, with full right-to-left support for Arabic.
Free forever. Really.
Your free account stays free. No trial period, no credit card. Here is what you keep for good:
The whole library: browse, read and download
Live classes in your rooms
Quizzes and their results
The AI study planner
Guardian reports for parents
The AI: 3 free questions every day
The exam generator for teachers, with a free allowance
Paying is optional and only gives you more AI usage. Nothing in this list will ever become paid.
Live classes
AI quizzes
Parent visibility
8 languages, including Arabic RTL
Frequently Asked Questions
Everything you need to know before getting started.
Will I have to pay later?
No, your free account stays free. The library, live classes, quizzes, the study planner, guardian reports and 3 AI questions a day remain free for good. Paying is optional and only adds more AI usage.
Do I need a credit card to sign up?
No. You only need an email address, or a Google, Facebook or X account. We never ask for payment details to create an account.
What can the AI do for me?
It corrects your homework step by step (type the question or send a photo), explains lessons as a tutor, writes quizzes from a lesson and builds a study plan. Teachers can generate a full test with its answer key. Free accounts get 3 AI questions a day.
Is the library for my country?
The library is organised by country, level and track. It opens on your country automatically and you can change it at any time. New countries and files are added as teachers share them.
Is SmartOstad really free?
Yes. Your free account stays free: the library, live classes, quizzes, the study planner, guardian reports and 3 AI questions a day. No credit card is needed. Paying is optional and only adds more AI usage.
Do I need to install anything?
No downloads required — SmartOstad runs entirely in your browser on a phone, tablet or computer. Teachers can share their screen, use the digital whiteboard, and record sessions for students who could not attend live.
How is this different from Zoom and ChatGPT?
Zoom gives you a video room and ChatGPT gives you answers, but neither connects to attendance, quizzes or a parent view. SmartOstad keeps the live class, the AI tools, attendance and parent visibility in one place with one login.
Can parents really monitor their child?
Yes. Students send a secure invitation link to their parent’s email. Once accepted, the parent gets a dashboard showing attendance, quiz scores, room memberships, and study plan progress, without access to private messages.
Can teachers create quizzes automatically?
Yes — teachers can turn any lesson, PDF or set of notes into a quiz in seconds using the AI quiz generator, with instant, detailed feedback for students on every answer.
Ready to study smarter?
Create your free account in a minute. No credit card needed.
