bad bounce? how the forces that make inflatable bounce houses fun can also hurt you.

The sun is coming out, you are with your friends and you are ready to jump!
If you\'re like millions of kids across the country, you might be playing in the inflatable bounce house this summer.
These colorful structures are interesting.
But they may also be dangerous.
S. Consumer Product Safety Commission sets safety standards for what people buy.
It studied bounce house injuries in 2015.
It is estimated that on 2013, more than 16,000 people visited the emergency room after the bounce house was injured (
See injury rate, right).
\"This number may be much higher now . \"GarySmith.
He studied injuries at the National Children\'s Hospital in columbus, Ohio.
\"Bounce houses are becoming more and more popular every year, so the number of injured has surged.
\"The exciting power of the bounce house will also hurt you.
But by understanding how they work, you can stay safe when you take the elevator.
Most bounce houses are made of an elastic material called Vinyl (VY-nuhl).
The air is pumped through them to help them maintain their shape.
When you jump to the bounce house, your feet push down on elastic vinyl.
When the vinyl bomb returns to its original position, it pushes up on your body.
Becky Thompson explained that the Power threw you into the air.
She is a physicist at the American Physics Society in Maryland.
Soon, gravity pulled you back.
Unfortunately, many people were injured.
Almost half of the bounce houses were injured when the jumper landed in the wrong position, Smith said.
If you hit the floor at the wrong angle, you can sprained your ankle, sprained your wrist, or break your arm or leg.
Stunts like a flop can lead to more
Seriously injured.
Landing on your head or neck can damage your spinal cord, which connects your brain to other parts of your body.
When the children hit each other, they also get hurt.
And biggerthe jumper, the impact of greater force.
It is easier for smaller people to speed up or change speed.
\"This means that if a big child meets a smaller child, the smaller child will fly,\" Thompson said . \".
Safety first, you can reduce the risk of bouncing the house by following the rules, Smith said.
First of all, don\'t be with too many people.
There should be enough space for everyone.
Just jump with almost the big kids. -no fifth-
First grade students
Grade students at the same time.
Pay attention to the people around you and prevent the crash.
\"And there is absolutely no flop,\" Smith said . \"
\"They did the worst damage.
\"Most importantly, don\'t play in the bounce house without supervision.
Adults should enforce the rules there. -
So you can focus on entertainment. Bad Bounce? PAGES 8-9.
Reading level: Lexite 840/Guided Reading Level R requires a lower reading level?
To read this article at a lower reading level, please go to the academic level.
Com/Super Science.
Purpose to design a helmet that can help prevent head injuries when you jump in a bounce house.
Standard NGSS: Core Concept: ps2.
B: type of interactive practice: design solution cross-concept: Common Core of cause and effect: reading information text: 1.
When explaining the content of the text, please refer to the details and examples in the text.
Science: 3. 6C, 4. 6D, 5. 6D, 6. 8B ELA: 3. 9, 4. 7, 5. 7, 6.
7 lesson plan 1 observe how items rebound from an elastic surface.
Prepare to introduce the event one day in advance.
You need a few small disposable plastic bowls, one balloon per bowl, scissors and packing tape.
Cut the mouth of each balloon so that it is less than the widest horizontal diameter.
Throw the microphone away
Stretch the balloon material at the entire opening of each bowl.
Stick the material to the bowl.
Divide the students into three or four groups.
To each group of abaron-
Bowl with lid and two marbles of different size.
Let the students observe and record together what happens when the Marbles fall on the elastic surface.
Q: * what happens when you drop the smaller marble onto the surface of the balloon?
What about the larger marble?
* What happens when you drop two marbles at the same time? (
They collide and the smaller marble bounces higher than the individual. )
Record the student\'s observations on the blackboard. (2)
Read this and reply to tips on the power in the bounce house.
Read \"bad rebound? \" as a class.
Switch the reader after each segment.
After reading the article, let the students complete the \"stop check!
\"There are skill sheets on Scholastic.
Com/Super Science.
Show students the video \"bounce science\" provided by the school \".
Com/Super Science.
After the video, ask: how does a person bounce in a bounce house similar to marble bouncing on balloon material?
What\'s the difference? (3)
Designed protective helmet.
Pass out the skill list \"Gear Up (T5).
Explain to the students that they will design a helmet prototype in groups to protect the head from injury.
Let each group present their designs and results to the class.
Q: Do all designs meet the design standards?
Teaching tools provided by the school.
Com/Super Science skills Table: Equipment (T5)
: Design, manufacture and test a prototype helmet that can prevent injuries while bouncing the house.
Stop and Check! (online only)
: Reply to the prompt after reading the article paragraph. Bounce Time (online only)
: Learn more about the force that causes the object to bounce back. On a Roll (online only)
: Use the rolling female ball to knock the target ball into the pocket.
How many puzzles can you solve?
Description: As bounce houses become more popular, the number of juries among them has increased.
Description: during the period from 2003 to 100,000, about 2013 Americans entered the emergency room due to an injury to a leaping House.
* Thinking: can you predict the number of E with this chartR.
Visit at I 2018? Why or why not?
Engineering challenges in bad bounce? \" (pp. 8-9)
You have read that following simple rules can reduce the risk of injury in the bounce house.
Imagine that you want to design a protective device that will help people to be safer.
Follow the steps below to design the prototype of the helmet or testabodel to protect the head of the person in the collision.
Observation: the bounce house may be injured when two jump shots collide.
Helmets protect people\'s heads.
The egg yolk inside the Hardeggshell is similar to the brain inside the skull.
Definition question: how would you design a \"helmet\" to prevent eggs from breaking in a collision?
Material: newspaper * scissors * cardboard or foam plastic egg cartons * 2 boiled eggs per student * tape * ruler * paper and pencil * construction materials such as cotton balls, pipe cleaners, rubber bands, and cardboard waste Design Solutions: 1.
Check your eggs and helmet material.
Think about what materials can prevent the shell from breaking during the collision. 2.
Draw a plan for your helmet in the space below.
Label the antenna you plan to use. 3.
Build your helmet around the eggs. 4.
What can you use to simulate a collision with an egg?
Design test of helmet.
Let your teacher approve your planThen testit. 5.
Take off the helmet carefully and check your eggs. Did it crack? If so, where?
Record your observations. 6.
Think about how you can change your prototype to better protect your eggs. Repeat steps 2-5.
Conclusion: 1.
How did you test your helmet?
Why did you decide to test it like this? 2.
How good is your prototype helmet protecting your eggs? 3.
To improve the design of the prototype helmet, what changes did you make to it?
Did your new design better protect your eggs?
Explain why not. ANSWERS 1.
The answer will vary, but one way is to remove the design from the same height in each test. 2.
The answer will be different. 3.
The answer will vary, but students can add different materials to the interior of the helmet to cushion the fall.
They can also add materials to the outside of the helmet to spread the impact to a larger area.