Understanding Compound Interest | educator explainer video made with ngram

About the video

This educator explainer video was made with ngram to break down how compound interest works for high school students using a simple one-hundred-dollar savings account example at a ten percent annual rate. It walks through the three core components—principal, interest rate, and compounding period—showing how interest earned each year gets added back to the balance so the next year's growth starts from a larger number. Clear year-by-year calculations trace the balance from one hundred dollars to one hundred ten, then one hundred twenty-one, and finally one hundred thirty-three dollars and ten cents by year three. The video also contrasts compound interest with simple interest, making the exponential nature of compounding easy to visualize. Calm narration paired with clean motion graphics keeps the pacing suited for classroom instruction or self-study, giving students a concise, factual refresher on how interest earning interest snowballs over time.