My challenge was to make a marble run. I drew a plan on paper and then we got materials. We gathered two packs of screws, nails, toilet paper rolls and wood and cardboard.
We screwed the pieces of cardboard onto the board. It was hard work. It didn't work at first because the marble would go too fast and go off the board. We had to add another pieces of cardboard to make sure that it didn't fall off. Then it kept missing another piece of cardboard so we add little pieces to keep the marble in. Then it worked!
This project reminds me of Newton's Law of Motion which says an object that is put in motion will keep on going onto a hard objects stops it from moving any more.
I liked this project because it was fun and it was really challenging. If I did it again, I would like to try using different materials.
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