What goes up, but at the same time goes down?
Up toward the sky, and down toward the ground.
Its present tense and past tense too,
come for a ride, just you and me!
Answer: Seesaw.
This riddle appears in the following downloadable PDF files:
Can you solve one of the most famous logic puzzle ever?
Memory Matching game for kids, adults and seniors.
Connect the matching tiles and pop them all.