Summary
Mark builds a robotic soccer goalie that uses cameras to track and block shots, then tests it against soccer star Cristiano Ronaldo. It combines fast motion-tracking with mechanical design.
Viewer safety
Ages 7+
Made for a general YouTube audience — an occasional mild or bleeped word can slip in, so preview if your classroom bar is strict.
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Teaching resources
Discussion questions
Talk about it
Cameras track the ball's motion, a computer predicts where it's going, and the goalie moves to block — all in a fraction of a second.
- What does the robot goalie need to sense to make a save?
- Why does it have to predict where the ball is going, not just where it is?
- What makes even a fast robot goalie hard to perfect?
Quick work-a-long
Vocabulary: tracking, predict, sensor, reaction time.
Try it: Have a partner roll a ball past you at an angle. How early do you have to move to block it? Discuss prediction.