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If you sign up for basic access and then upgrade to full access, in some rare cases, your full access modules may take a few minutes to appear. It should not take more than 10 minutes. If you do not see the modules after that, please contact us using the contact form for further assistance.

To disable auto-renewal, go to your account page, select Subscriptions, and click Cancel. This will change it to Reactivate, and you’re done. Your subscription will not renew when your current term ends. 

To resume auto-renewal, go to your account page, select Subscriptions, and click Reactivate. Your subscription will start renewing when your current term ends.

To cancel your subscription and request a full refund within the 30-day money-back guarantee period, please use the contact form, and we will be happy to assist you. You should see the full refund on your statement within 7-14 days, depending on your bank’s processing time.

All of our lessons are recorded in high-definition. If a lesson video plays in lower quality than expected, it’s likely due to your internet speed (bandwidth) or computer processing speed, which may not support higher quality playback. 

You can try manually switching to high-definition mode by clicking the ⚙ gear icon on the player bar at the bottom of the video and selecting 1080p. If necessary, you can lower the quality further. Alternatively, you can switch to using an Android tablet or iPad instead.

What's Problem Sum?

Problem Sum is a term commonly used in the context of math education, particularly in regions that follow the Singapore Math curriculum. It refers to a type of math problem that typically involves multiple steps and requires students to apply various mathematical concepts and strategies to find the solution. These problems are often word problems that describe a real-world scenario, requiring students to read, comprehend, and analyze the situation before applying the appropriate math operations to solve it.

In essence, a Problem Sum combines elements of arithmetic and logical reasoning, challenging students to think critically and use their problem-solving skills. It is a key component in developing a deeper understanding of math concepts and enhancing analytical abilities in students.