
Explorer Course · Ages 8+
The promise and the house
- Explain why most families borrow to buy a home
- Tell the difference between the note and the mortgage
- Define equity
Property Planet lesson
The note is the promise; the mortgage or deed of trust is the security. Explore the parties, liens, equity and how foreclosure rules differ by state.
Explorer 8+Advanced 13+15 minutes

Deed of trust vs mortgage is one of the most confusing topics in home buying, even for adults. In this lesson on Property Planet, Professor Ledger separates the two documents everyone mixes up and shows exactly where the promissory note fits.
When a family borrows to buy a home, there are usually two key papers. First, the promissory note is the promise to repay the loan. Second, a security instrument lets the lender use the home as collateral. That security instrument is either a mortgage or a deed of trust, depending mostly on the state.

This lesson is offered for ages 8 and up and 13 to 17, because the ideas build on What Is a Promissory Note?. In addition, it connects to the Mortgage Mission calculator, where learners see principal, interest and equity change over time.
Property law is set mostly by states. As a result, the same home loan can follow different rules in Texas, California or New York. This lesson explains common patterns, not the law of any one state, and it is not legal advice.
Start with the level that matches your learner, then try the next level up when they are ready. For example, a family can read the Junior story together, while an older sibling works through the Advanced version. Because every level covers the same topic, this deed of trust vs mortgage lesson works well for mixed-age groups, homeschool co-ops and classrooms. Finally, the quiz shows what stuck, and the summary makes a quick review the next day.
Lessons are taken inside the Wealthonauts courses, where your child’s progress and quiz scores are tracked. Pick the course for your child’s age.

Explorer Course · Ages 8+

Advanced Course · Ages 13+
This lesson is awaiting expert editorial review.
Wealthonauts lessons explain how financial systems work. They are educational, not financial or legal advice. Laws differ between states and countries.