Privacy Policy

What information do we collect and how do we use it?

We do not collect personally identifiable information about you, except when you provide it to us via the contact form. We use this information to reply to you.

Like many other websites, we use Google Analytics in addition to basic web server logs. Both of these collect non-personally-identifiable information about your web browser and computer. We use this information to determine which web browsers and operating systems to support.

We also collect non-personally-identifiable information about your exercise answers. We use this information to analyze which questions and topics students have difficulty understanding.

Do we use cookies?

We use cookies to persist information such as: lesson view mode, exercise scores, and calculator settings. In addition, Google Analytics uses cookies as part of its data collection process.

Do we disclose any information to outside parties?

We do not sell, trade, or otherwise transfer to outside parties your personally identifiable information. This does not include trusted third parties who assist us in operating our website, conducting our business, or servicing you, so long as those parties agree to keep this information confidential. We may also release your information when we believe release is appropriate to comply with the law, enforce our site policies, or protect ours or others rights, property, or safety. However, non-personally-identifiable visitor information may be provided to other parties for marketing, advertising, or other uses.

Third party links

Occasionally, at our discretion, we may include links to third party products or services on our website. These third party sites have separate and independent privacy policies. We therefore have no responsibility or liability for the content and activities of these linked sites. Nonetheless, we seek to protect the integrity of our site and welcome any feedback about these sites.

California Online Privacy Protection Act Compliance

Because we value your privacy we have taken the necessary precautions to be in compliance with the California Online Privacy Protection Act. We therefore will not distribute your personal information to outside parties without your consent.

Childrens Online Privacy Protection Act Compliance

We are in compliance with the requirements of COPPA (Childrens Online Privacy Protection Act), we do not collect any information from anyone under 13 years of age. Our website, products and services are all directed to people who are at least 13 years old or older.

Your Consent

By using our site, you consent to our web site privacy policy.

Changes to our Privacy Policy

If we decide to change our privacy policy, we will post those changes on this page.