! It took about fifteen minutes to build this with my daughter. The instructions were straight-forward and clear. With simple wiring and the use of a small phillips head screw driver, this is a great toy for a budding engineer! And at around $15, it's very affordable; I'll be buying a few to keep on hand for birthday party and Christmas gifts.After it's built, you can explore a variety of science and engineering concepts with your child like friction and speed. Here are some questions to explore with your child"
- How does it move on various surfaces?
- What surface will it move the fastest?
- If we adjust the brush or the tightness of the screws, does it affect the motion of the robot?
- How can you modify the robot so that it will move in a straight line?
Brush Robot: Contents of the box.
: Contents of the box.
You'll also need two AAA batteries and a small phillips head screwdriver.
Done!
Brush Robot moving around our table!
moving around our table! 
My four-year-old loves it too!
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