FAQs
Frequently asked questions about login, account activation, school subscriptions, and device compatibility.
Find answers to common questions about login, subscriptions, account setup, and platform support.
Login & EdConnect
How do teachers and students log in?
Click the EdConnect button on the login screen. You will be redirected to the Hong Kong Education City (EdCity) Single Sign-On portal. Log in with your school EdCity account credentials, and you will automatically return to Lambda Math.
What is a "Trial Account"?
Trial accounts are provided for teachers and subject panels who wish to preview features, question banks, and AI learning tools prior to school-wide subscription. Please contact our support team at support@lambda-math.com to request a trial.
Account Activation
What should I do if I see "Account Not Found"?
An Account Not Found notice indicates that your school profile has not yet been activated or assigned for the current school year.
- Students: You do not need to register. Please tell your Math Teacher or Class Teacher to activate your account.
- Teachers & School Administrators: Please refer to the Account Activation guide for the complete 4-step workflow on annual EdData authorization and School Admin Portal setup.
How does the School Administrator activate teachers and students?
The School Administrator logs in to the School Admin Portal to activate teachers and students using the allocated quota, and assigns teachers to their respective classes or teaching groups.
Once activated and assigned, teachers and students can immediately sign in to access the platform. For a step-by-step walkthrough, see the Account Activation guide.
Data Privacy & Consent
How is student data collected and used, and is there a link for school parental consent notices?
Student personal data (including name, EdCity account login name, student registration number, class, and class number) is collected and used strictly for processing account registration, maintaining the service, providing educational support, and facilitating continuous learning. All personal data is kept confidential in accordance with the Personal Data (Privacy) Ordinance (PDPO).
Schools can include the link to our policy on their school notice: support.lambda-math.com/en/privacy.
How long is student data stored on the server, and can a school request data deletion?
- During Active Service: Data (including account details, learning records, and assignment submissions) is securely stored on our servers for the duration of your active subscription and the school academic year.
- Post-Service / Account Deactivation: Once the service agreement ends or an account is closed, data is retained for a transition period of up to 3 months before being securely erased or permanently anonymized.
- Deletion Upon Request: Schools may request the deletion or retrieval of personal data at any time by contacting our Data Protection Officer at support@lambda-math.com.
QEF & Subscription
How can our school subscribe or renew?
School Buyer Account holders can log in to the EdCity AMS portal, submit an online application for Lambda Math, upload the signed confirmation slip, and complete EdData student/teacher roster authorization.
Devices & Browsers
Which devices and browsers are supported?
- Recommended Browser: We recommend using Google Chrome for the best performance and compatibility (Microsoft Edge and Safari are also supported).
- Teacher Interface: For teachers, Lambda Math is designed for displays with a screen width of at least 1024px (desktop, laptop, or tablet in landscape mode).
- Student Interface: Students can use Lambda Math on desktops, laptops, and tablets (including iPad, iPad mini, Android tablets, and Chromebooks).
Still Need Assistance?
If you have further questions or encounter any issues, please contact our support team: