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August 17, 2022
It's a blast to make things out of Lego, like castles, cars and robots. Well, as we see in this video, someone built a Lego robot that builds Lego cars itself! The robot factory grabs the body of the car, then grabs a steering wheel and presses it on. Then it sticks on the front hood, the back seat, and other bricks. In the end, out pops a car that looks exactly like the last 8-10 cars made. It takes a minute or more to stick on each piece, so you could build a car much faster than the robot. But if it's bedtime and you need 100 cars made by tomorrow, this robot could do the job for you.
Wee ones: If the Lego car starts with 4 wheels and a floor, how many pieces does the car have?
Little kids: If every car needs 2 pairs of wheels, how many pairs do 3 cars use in total?  Bonus: If you have 10 pairs in stock, how many cars can you make?
Big kids: If right now the robot makes 1 car every 30 minutes, how fast would it make a car if it made them twice as fast?  Bonus: At the new speed, how many can it crank out in 1 hour? (Reminder if needed: An hour has 60 minutes.) The sky's the limit: Without multiplying it all out, can you tell who will finish first: a robot building 28 cars spending 6 minutes on each, or a robot building 50 cars spending 3 minutes on each?

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