Staying at home can also experience the charm of science! Starting from today, Shanghai Changning and Changning Shaoke Station have launched 7 consecutive phases of "Home and Joy, Parent-Child Small Experiments" to cultivate children's strong interest in science. The props required for the experiment are common daily necessities, simple and interesting. Let's do it with my kids this holiday season
A4 paper, straws, plasticine, double-headed toothpicks... These materials are common in daily life, how much do you know about their properties? Today, the teacher of the District Junior Science Station taught everyone to use these materials to experience a Mind Olympiad challenge - "Toothpick Forest".
"Toothpick Forest" experiment description
target
Within 10 minutes, make as many toothpicks stand up as possible to form a "toothpick forest".
material
50 double-ended toothpicks, 1 piece of plasticine, 2 plastic straws, 6 sheets of adhesive label paper, 1 sheet of A4 paper.
request
Toothpicks can touch any kind of material, and when the toothpicks stand up, one end must touch the tabletop, and the toothpicks must not touch each other. No points should be scored if the toothpick does not touch the table.
10 points are added to making the toothpick stand up in 2 ways and 30 points for the toothpick standing up in 3 ways.
A "Toothpick Forest" consisting of 2 different heights can add 10 points, and a "Toothpick Forest" composed of 3 different heights can add 30 points.
Each toothpick that touches the table top gets 2 points.
Safety tips
Avoid damage caused by the tip of the toothpick during the challenge.
Production steps
01
Use different materials to make the toothpick stand up
Plasticine: Can be kneaded into various shapes, rolled into balls, and easily stand up after a toothpick is passed.
Straw: Hollow inside, the toothpick can penetrate it and stand on the tabletop. In addition, the straw can also be tri-folded, and one end can be tucked into the gap at the other end to make a triangle for easier placement.
A4 paper: Relatively soft, easy to fold, toothpicks can easily pass through it. Folding A4 paper to increase thickness can improve stability.
02
Use the material to connect the toothpicks
Careful examination of the question found that the scoring point also has the item "toothpick forest" composed of different heights, and there are 6 sticky labels in the specified material, which can be rationally used to connect toothpicks to form "toothpick forests" of different heights.
03
Get a good score with a reasonable mix
Let's take a look at the "Toothpick Forest" composed of different materials and different heights! Can you figure out the final score?
The final score of the solution in the video is 148 points, did you calculate correctly?
Expand and think
A variety of materials appear in this question, mainly to examine the challenger's use of various material properties. In the process of completion, there are greater requirements for the challenger's hands-on ability and innovative ideas.
The above problem solving solutions are more common methods, but the higher challenge score can not stop here, please think carefully about the following questions:
How do you assign the number of toothpicks placed on each material, ensuring that one end of the toothpick touches the tabletop and that the toothpicks do not touch each other to affect the score?
The number of toothpicks provided is limited, and increasing the height means that the number of toothpicks touching the desktop will decrease, how is the best solution?
Do you have a better idea?
The picture comes from Changning Shaoke Station
Text: Cheng Qinghui
Editor: Li Bingqian
*Please indicate the source of "Shanghai Changning"
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