Sarah uses Mark to balance himself

Sarah has Mark stand on the middle of the seesaw, and she climbs into the container end to provide counterweight.

She tells Mark to slowly shuffle along the seesaw, towards the other end and, when he’s about halfway along, she climbs out of the container.

This results in Mark’s weight balancing the weight of the container end of the seesaw.

As the task dictates that Mark must be sitting down, Mark carefully squats down and then sits on the seesaw, remaining balanced.

Sarah therefore wins the task.

(Written by Jenny R and proofread by Karl Craven)

(Illustrations collected by Jenny R and adjusted by David Fuller)