: If the worksheet involves a puzzle or riddle (as the title suggests), it could be an engaging way to introduce or reinforce mathematical concepts or logical reasoning skills. The use of a relatable scenario (a teenage yardstick speaking to its parents) might make the problem more memorable and enjoyable for students.

Many versions, like those found on Math with Mrs. Swing , require students to calculate outcomes for independent events, such as spinning multiple spinners or rolling dice.

But the most famous answer (found in riddle databases) is:

Another idea: Teenagers are told to stop growing, so the yardstick (which is a measuring tool that is fixed) might say, "I can’t stop being a yardstick!" or "You’re always measuring me!" Maybe the punchline is "Stop expecting me to be perfect, just accept my flaws!" (since a yardstick has marks for measurements, maybe flaws as in the lines or something).

If you can share the actual questions from the worksheet, I’d be glad to help solve them. Otherwise, check if the RAR file is from a known educational source — the key might be included as a PDF inside the archive.

If your worksheet key isn't spelling out the "Growing another foot" punchline, check for these common errors: