Forgetting Curve - Finnish Words

Learning 10 New Finnish Words

This simulation shows how your memory for 10 new Finnish words changes over 30 days. Click the squares below to **simulate reviewing** the words on that day and see how your memory retention jumps back up!

Your Memory Status: 100% Retention

The Forgetting Curve Formula

This simulation is based on the **Ebbinghaus Forgetting Curve**, which is an exponential decay function. The core formula for memory retention is:

R(t) = e^-λt

The X-Axis represents **time** in days.
The Y-Axis represents **memory retention** from 0% to 100%.
R(t) is the memory retention at time **t**.
e is the base of the natural logarithm.
λ (lambda) is the forgetting rate. A higher value means you forget faster.
t is the time that has passed since your last review.

When you click a day to review, the curve jumps up, and the forgetting process starts over from a new, higher retention level. This visually demonstrates the power of consistent review in fighting memory decay.

Question for Students:

Using the interactive graph, which review strategy leads to the highest memory retention on Day 30?

**Strategy A:** No review.
**Strategy B:** Review only on Day 10.
**Strategy C:** Review on Days 3, 7, and 14.
**Strategy D:** Review on Days 1, 2, 3, and 4.

Try each strategy by clicking the corresponding day squares. Observe the final memory retention on Day 30 to find the best strategy. The best answer is **C**.